chore: import upstream snapshot with attribution

apps/sim/components/emails/_styles/base.ts

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+/**
+ * Base styles for all email templates.
+ * Colors are derived from globals.css light mode tokens.
+ */
+
+import { getBrandConfig } from '@/ee/whitelabeling'
+
+/** Color tokens from globals.css (light mode), brand-aware for whitelabeled instances */
+function buildColors() {
+  const brand = getBrandConfig()
+  const isWhitelabeled = brand.isWhitelabeled
+  const accentColor =
+    isWhitelabeled && brand.theme?.primaryColor ? brand.theme.primaryColor : '#1a1a1a'
+
+  return {
+    /** Main canvas background — a hair off-white so the white card reads via contrast, not the border alone */
+    bgOuter: '#f8f8f8',
+    /** Card/container background — platform `--surface-2` */
+    bgCard: '#ffffff',
+    /** Primary text — platform `--text-primary` */
+    textPrimary: '#1a1a1a',
+    /** Secondary text — platform `--text-secondary` */
+    textSecondary: '#525252',
+    /** Tertiary text — platform `--text-tertiary` */
+    textTertiary: '#5c5c5c',
+    /** Muted text (footer) — platform `--text-muted` */
+    textMuted: '#707070',
+    /** Brand primary — neutral by default, brand color when whitelabeled */
+    brandPrimary:
+      isWhitelabeled && brand.theme?.primaryColor ? brand.theme.primaryColor : '#1a1a1a',
+    /** Accent for buttons and links — neutral by default, brand color when whitelabeled */
+    brandTertiary: accentColor,
+    /** Border/divider — platform `--border` */
+    divider: '#dedede',
+    /** Subtle fill for info/code boxes on the white card */
+    surfaceSubtle: '#f7f7f7',
+    /** Error surface fill — platform `--terminal-status-error-bg` */
+    errorBg: '#fef2f2',
+    /** Error surface border — platform `--error-muted` */
+    errorBorder: '#fecaca',
+    /** Footer background — matches the canvas */
+    footerBg: '#f8f8f8',
+  }
+}
+
+export const colors = buildColors()
+
+/** Typography settings */
+export const typography = {
+  fontFamily:
+    "'Season Sans', -apple-system, 'SF Pro Display', 'SF Pro Text', 'Helvetica', sans-serif",
+  fontSize: {
+    body: '16px',
+    small: '14px',
+    caption: '12px',
+  },
+  lineHeight: {
+    body: '24px',
+    caption: '20px',
+  },
+}
+
+/** Spacing values */
+export const spacing = {
+  containerWidth: 600,
+  gutter: 40,
+  sectionGap: 20,
+  paragraphGap: 12,
+  /** Logo width in pixels */
+  logoWidth: 90,
+}
+
+export const baseStyles = {
+  fontFamily: typography.fontFamily,
+
+  /** Main body wrapper with outer background */
+  main: {
+    backgroundColor: colors.bgOuter,
+    fontFamily: typography.fontFamily,
+    padding: '32px 0',
+  },
+
+  /** Center wrapper for email content */
+  wrapper: {
+    maxWidth: `${spacing.containerWidth}px`,
+    margin: '0 auto',
+  },
+
+  /** Main card container — white surface, chip-radius, hairline border on the near-white canvas */
+  container: {
+    maxWidth: `${spacing.containerWidth}px`,
+    margin: '0 auto',
+    backgroundColor: colors.bgCard,
+    border: `1px solid ${colors.divider}`,
+    borderRadius: '8px',
+    overflow: 'hidden',
+  },
+
+  /** Header section with logo */
+  header: {
+    padding: `32px ${spacing.gutter}px 16px ${spacing.gutter}px`,
+    textAlign: 'left' as const,
+  },
+
+  /** Main content area with horizontal padding */
+  content: {
+    padding: `0 ${spacing.gutter}px 32px ${spacing.gutter}px`,
+  },
+
+  /** Standard paragraph text */
+  paragraph: {
+    fontSize: typography.fontSize.body,
+    lineHeight: typography.lineHeight.body,
+    color: colors.textSecondary,
+    fontWeight: 400,
+    fontFamily: typography.fontFamily,
+    margin: `${spacing.paragraphGap}px 0`,
+  },
+
+  /** Bold label text (e.g., "Platform:", "Time:") */
+  label: {
+    fontSize: typography.fontSize.body,
+    lineHeight: typography.lineHeight.body,
+    color: colors.textSecondary,
+    fontWeight: 'bold' as const,
+    fontFamily: typography.fontFamily,
+    margin: 0,
+    display: 'inline',
+  },
+
+  /** Primary CTA button - matches the platform's primary Chip (inverse fill, rounded-lg, h-30, text-sm) */
+  button: {
+    display: 'inline-block',
+    backgroundColor: colors.brandTertiary,
+    color: '#ffffff',
+    fontWeight: 400,
+    fontSize: '14px',
+    lineHeight: '30px',
+    padding: '0 12px',
+    borderRadius: '8px',
+    textDecoration: 'none',
+    textAlign: 'center' as const,
+    margin: '4px 0',
+    fontFamily: typography.fontFamily,
+  },
+
+  /** Link text style - neutral color, so it carries an underline to read as a link */
+  link: {
+    color: colors.brandTertiary,
+    fontWeight: 400,
+    textDecoration: 'underline',
+  },
+
+  /** Horizontal divider */
+  divider: {
+    borderTop: `1px solid ${colors.divider}`,
+    margin: `16px 0`,
+  },
+
+  /** Footer container (inside gray area below card) */
+  footer: {
+    maxWidth: `${spacing.containerWidth}px`,
+    margin: '0 auto',
+    padding: `32px ${spacing.gutter}px`,
+    textAlign: 'left' as const,
+  },
+
+  /** Footer text style */
+  footerText: {
+    fontSize: typography.fontSize.caption,
+    lineHeight: typography.lineHeight.caption,
+    color: colors.textMuted,
+    fontFamily: typography.fontFamily,
+    margin: '0 0 10px 0',
+  },
+
+  /** Code/OTP container */
+  codeContainer: {
+    margin: '12px 0',
+    padding: '12px 16px',
+    backgroundColor: colors.surfaceSubtle,
+    borderRadius: '8px',
+    border: `1px solid ${colors.divider}`,
+    textAlign: 'center' as const,
+  },
+
+  /** Code/OTP text */
+  code: {
+    fontSize: '24px',
+    fontWeight: 'bold' as const,
+    letterSpacing: '3px',
+    color: colors.textPrimary,
+    fontFamily: typography.fontFamily,
+    margin: 0,
+  },
+
+  /** Code block text (for JSON/code display) */
+  codeBlock: {
+    fontSize: typography.fontSize.caption,
+    lineHeight: typography.lineHeight.caption,
+    color: colors.textSecondary,
+    fontFamily: 'monospace',
+    whiteSpace: 'pre-wrap' as const,
+    wordWrap: 'break-word' as const,
+    margin: 0,
+  },
+
+  /** Highlighted info box (e.g., "What you get with Pro") */
+  infoBox: {
+    backgroundColor: colors.surfaceSubtle,
+    padding: '16px 18px',
+    borderRadius: '8px',
+    margin: '16px 0',
+  },
+
+  /** Info box title */
+  infoBoxTitle: {
+    fontSize: typography.fontSize.body,
+    lineHeight: typography.lineHeight.body,
+    fontWeight: 600,
+    color: colors.textPrimary,
+    fontFamily: typography.fontFamily,
+    margin: '0 0 8px 0',
+  },
+
+  /** Info box list content */
+  infoBoxList: {
+    fontSize: typography.fontSize.body,
+    lineHeight: '1.6',
+    color: colors.textSecondary,
+    fontFamily: typography.fontFamily,
+    margin: 0,
+  },
+
+  /** Section borders - decorative accent line */
+  sectionsBorders: {
+    width: '100%',
+    display: 'flex',
+  },
+
+  sectionBorder: {
+    borderBottom: `1px solid ${colors.divider}`,
+    width: '249px',
+  },
+
+  sectionCenter: {
+    borderBottom: `1px solid ${colors.brandTertiary}`,
+    width: '102px',
+  },
+
+  /** Spacer row for vertical spacing in tables */
+  spacer: {
+    border: 0,
+    margin: 0,
+    padding: 0,
+    fontSize: '1px',
+    lineHeight: '1px',
+  },
+
+  /** Gutter cell for horizontal padding in tables */
+  gutter: {
+    border: 0,
+    margin: 0,
+    padding: 0,
+    fontSize: '1px',
+    lineHeight: '1px',
+    width: `${spacing.gutter}px`,
+  },
+
+  /** Info row (e.g., Platform, Device location, Time) */
+  infoRow: {
+    fontSize: typography.fontSize.body,
+    lineHeight: typography.lineHeight.body,
+    color: colors.textSecondary,
+    fontFamily: typography.fontFamily,
+    margin: '8px 0',
+  },
+}
+
+/** Styles for plain personal emails (no branding, no EmailLayout) */
+export const plainEmailStyles = {
+  body: {
+    fontFamily: '-apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif',
+    backgroundColor: '#ffffff',
+    margin: '0',
+    padding: '0',
+  },
+  container: {
+    maxWidth: '560px',
+    margin: '40px auto',
+    padding: '0 24px',
+  },
+  p: {
+    fontSize: '15px',
+    lineHeight: '1.6',
+    color: '#1a1a1a',
+    margin: '0 0 16px',
+  },
+} as const

apps/sim/components/emails/_styles/index.ts

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+export { baseStyles, colors, plainEmailStyles, spacing, typography } from './base'

apps/sim/components/emails/auth/existing-account-email.tsx

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+import { Link, Text } from '@react-email/components'
+import { baseStyles } from '@/components/emails/_styles'
+import { EmailLayout } from '@/components/emails/components'
+import { getBaseUrl } from '@/lib/core/utils/urls'
+import { getBrandConfig } from '@/ee/whitelabeling'
+
+interface ExistingAccountEmailProps {
+  username?: string
+}
+
+/**
+ * Sent out-of-band when someone attempts to sign up with an email that already
+ * has an account. The sign-up endpoint itself returns a generic success
+ * response to avoid account enumeration, so this email is how the real account
+ * owner learns of the attempt.
+ */
+export function ExistingAccountEmail({ username = '' }: ExistingAccountEmailProps) {
+  const brand = getBrandConfig()
+  const loginLink = `${getBaseUrl()}/login`
+
+  return (
+    <EmailLayout
+      preview={`Someone tried to sign up with your ${brand.name} email`}
+      showUnsubscribe={false}
+    >
+      <Text style={baseStyles.paragraph}>Hello {username},</Text>
+      <Text style={baseStyles.paragraph}>
+        Someone just tried to create a {brand.name} account using this email address, but an account
+        already exists. If this was you, sign in instead — or reset your password if you've
+        forgotten it.
+      </Text>
+
+      <Link href={loginLink} style={{ textDecoration: 'none' }}>
+        <Text style={baseStyles.button}>Sign In</Text>
+      </Link>
+
+      <div style={baseStyles.divider} />
+
+      <Text style={{ ...baseStyles.footerText, textAlign: 'left' }}>
+        If this wasn't you, no action is needed — no account was created or changed.
+      </Text>
+    </EmailLayout>
+  )
+}
+
+export default ExistingAccountEmail

apps/sim/components/emails/auth/index.ts

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+export { ExistingAccountEmail } from './existing-account-email'
+export { OnboardingFollowupEmail } from './onboarding-followup-email'
+export { OTPVerificationEmail } from './otp-verification-email'
+export { ResetPasswordEmail } from './reset-password-email'
+export { WelcomeEmail } from './welcome-email'

apps/sim/components/emails/auth/onboarding-followup-email.tsx

@@ -0,0 +1,38 @@
+import { Body, Head, Html, Preview, Text } from '@react-email/components'
+import { plainEmailStyles as styles } from '@/components/emails/_styles'
+
+interface OnboardingFollowupEmailProps {
+  userName?: string
+}
+
+export function OnboardingFollowupEmail({ userName }: OnboardingFollowupEmailProps) {
+  return (
+    <Html>
+      <Head />
+      <Preview>Quick question</Preview>
+      <Body style={styles.body}>
+        <div style={styles.container}>
+          <Text style={styles.p}>{userName ? `Hey ${userName},` : 'Hey,'}</Text>
+          <Text style={styles.p}>
+            It&apos;s been a few days since you signed up. I hope you&apos;re enjoying Sim!
+          </Text>
+          <Text style={styles.p}>
+            I&apos;d love to know — what did you expect when you signed up vs. what did you get?
+          </Text>
+          <Text style={styles.p}>
+            A reply with your thoughts would really help us improve the product for everyone.
+          </Text>
+          <Text style={styles.p}>
+            Thanks,
+            <br />
+            Emir
+            <br />
+            Founder, Sim
+          </Text>
+        </div>
+      </Body>
+    </Html>
+  )
+}
+
+export default OnboardingFollowupEmail

apps/sim/components/emails/auth/otp-verification-email.tsx

@@ -0,0 +1,59 @@
+import { Section, Text } from '@react-email/components'
+import { baseStyles } from '@/components/emails/_styles'
+import { EmailLayout } from '@/components/emails/components'
+import { getBrandConfig } from '@/ee/whitelabeling'
+
+interface OTPVerificationEmailProps {
+  otp: string
+  email?: string
+  type?: 'sign-in' | 'email-verification' | 'change-email' | 'forget-password' | 'chat-access'
+  chatTitle?: string
+}
+
+const getSubjectByType = (type: string, brandName: string, chatTitle?: string) => {
+  switch (type) {
+    case 'sign-in':
+      return `Sign in to ${brandName}`
+    case 'email-verification':
+      return `Verify your email for ${brandName}`
+    case 'change-email':
+      return `Verify your new email for ${brandName}`
+    case 'forget-password':
+      return `Reset your ${brandName} password`
+    case 'chat-access':
+      return `Verification code for ${chatTitle || 'Chat'}`
+    default:
+      return `Verification code for ${brandName}`
+  }
+}
+
+export function OTPVerificationEmail({
+  otp,
+  email = '',
+  type = 'email-verification',
+  chatTitle,
+}: OTPVerificationEmailProps) {
+  const brand = getBrandConfig()
+
+  return (
+    <EmailLayout preview={getSubjectByType(type, brand.name, chatTitle)} showUnsubscribe={false}>
+      <Text style={baseStyles.paragraph}>Your verification code:</Text>
+
+      <Section style={baseStyles.codeContainer}>
+        <Text style={baseStyles.code}>{otp}</Text>
+      </Section>
+
+      <Text style={baseStyles.paragraph}>This code will expire in 15 minutes.</Text>
+
+      {/* Divider */}
+      <div style={baseStyles.divider} />
+
+      <Text style={{ ...baseStyles.footerText, textAlign: 'left' }}>
+        Do not share this code with anyone. If you didn't request this code, you can safely ignore
+        this email.
+      </Text>
+    </EmailLayout>
+  )
+}
+
+export default OTPVerificationEmail

apps/sim/components/emails/auth/reset-password-email.tsx

@@ -0,0 +1,36 @@
+import { Link, Text } from '@react-email/components'
+import { baseStyles } from '@/components/emails/_styles'
+import { EmailLayout } from '@/components/emails/components'
+import { getBrandConfig } from '@/ee/whitelabeling'
+
+interface ResetPasswordEmailProps {
+  username?: string
+  resetLink?: string
+}
+
+export function ResetPasswordEmail({ username = '', resetLink = '' }: ResetPasswordEmailProps) {
+  const brand = getBrandConfig()
+
+  return (
+    <EmailLayout preview={`Reset your ${brand.name} password`} showUnsubscribe={false}>
+      <Text style={baseStyles.paragraph}>Hello {username},</Text>
+      <Text style={baseStyles.paragraph}>
+        A password reset was requested for your {brand.name} account. Click below to set a new
+        password.
+      </Text>
+
+      <Link href={resetLink} style={{ textDecoration: 'none' }}>
+        <Text style={baseStyles.button}>Reset Password</Text>
+      </Link>
+
+      {/* Divider */}
+      <div style={baseStyles.divider} />
+
+      <Text style={{ ...baseStyles.footerText, textAlign: 'left' }}>
+        If you didn't request this, you can ignore this email. Link expires in 24 hours.
+      </Text>
+    </EmailLayout>
+  )
+}
+
+export default ResetPasswordEmail

apps/sim/components/emails/auth/welcome-email.tsx

@@ -0,0 +1,53 @@
+import { Link, Text } from '@react-email/components'
+import { baseStyles } from '@/components/emails/_styles'
+import { EmailLayout } from '@/components/emails/components'
+import { getBaseUrl } from '@/lib/core/utils/urls'
+import { getBrandConfig } from '@/ee/whitelabeling'
+
+interface WelcomeEmailProps {
+  userName?: string
+}
+
+export function WelcomeEmail({ userName }: WelcomeEmailProps) {
+  const brand = getBrandConfig()
+  const baseUrl = getBaseUrl()
+
+  return (
+    <EmailLayout preview={`Welcome to ${brand.name}`} showUnsubscribe={false}>
+      <Text style={{ ...baseStyles.paragraph, marginTop: 0 }}>
+        {userName ? `Hey ${userName},` : 'Hey,'}
+      </Text>
+      <Text style={baseStyles.paragraph}>
+        Welcome to {brand.name}! Your account is ready. Start building, testing, and deploying AI
+        workflows in minutes.
+      </Text>
+
+      <Link href={`${baseUrl}/login`} style={{ textDecoration: 'none' }}>
+        <Text style={baseStyles.button}>Get Started</Text>
+      </Link>
+
+      <Text style={baseStyles.paragraph}>
+        If you have any questions or feedback, just reply to this email. I read every message!
+      </Text>
+
+      <Text style={baseStyles.paragraph}>
+        Want to chat?{' '}
+        <Link href={`${baseUrl}/team`} style={baseStyles.link}>
+          Schedule a call
+        </Link>{' '}
+        with our team.
+      </Text>
+
+      <Text style={baseStyles.paragraph}>- Emir, co-founder of {brand.name}</Text>
+
+      {/* Divider */}
+      <div style={baseStyles.divider} />
+
+      <Text style={{ ...baseStyles.footerText, textAlign: 'left' }}>
+        You're on the Community plan with 1,000 credits to get started.
+      </Text>
+    </EmailLayout>
+  )
+}
+
+export default WelcomeEmail

apps/sim/components/emails/billing/abandoned-checkout-email.tsx

@@ -0,0 +1,33 @@
+import { Body, Head, Html, Preview, Text } from '@react-email/components'
+import { plainEmailStyles as styles } from '@/components/emails/_styles'
+
+interface AbandonedCheckoutEmailProps {
+  userName?: string
+}
+
+export function AbandonedCheckoutEmail({ userName }: AbandonedCheckoutEmailProps) {
+  return (
+    <Html>
+      <Head />
+      <Preview>Did you run into an issue with your upgrade?</Preview>
+      <Body style={styles.body}>
+        <div style={styles.container}>
+          <Text style={styles.p}>{userName ? `Hi ${userName},` : 'Hi,'}</Text>
+          <Text style={styles.p}>
+            I saw that you tried to upgrade your Sim plan but didn&apos;t end up completing it.
+          </Text>
+          <Text style={styles.p}>
+            Did you run into an issue, or did you have a question? Here to help.
+          </Text>
+          <Text style={styles.p}>
+            — Emir
+            <br />
+            Founder, Sim
+          </Text>
+        </div>
+      </Body>
+    </Html>
+  )
+}
+
+export default AbandonedCheckoutEmail

apps/sim/components/emails/billing/constants.ts

@@ -0,0 +1,7 @@
+/** Pro plan features shown in billing upgrade emails */
+export const proFeatures = [
+  { label: '6,000 credits/month', desc: 'included' },
+  { label: '+50 daily refresh', desc: 'credits per day' },
+  { label: '150 runs/min', desc: 'sync executions' },
+  { label: '50GB storage', desc: 'for files & assets' },
+] as const

apps/sim/components/emails/billing/credit-purchase-email.tsx

@@ -0,0 +1,99 @@
+import { Link, Section, Text } from '@react-email/components'
+import { baseStyles, colors } from '@/components/emails/_styles'
+import { EmailLayout } from '@/components/emails/components'
+import { dollarsToCredits } from '@/lib/billing/credits/conversion'
+import { getBaseUrl } from '@/lib/core/utils/urls'
+import { getBrandConfig } from '@/ee/whitelabeling'
+
+interface CreditPurchaseEmailProps {
+  userName?: string
+  amount: number
+  newBalance: number
+  purchaseDate?: Date
+}
+
+export function CreditPurchaseEmail({
+  userName,
+  amount,
+  newBalance,
+  purchaseDate = new Date(),
+}: CreditPurchaseEmailProps) {
+  const brand = getBrandConfig()
+  const baseUrl = getBaseUrl()
+
+  const previewText = `${brand.name}: ${dollarsToCredits(amount).toLocaleString()} credits added to your account`
+
+  return (
+    <EmailLayout preview={previewText} showUnsubscribe={false}>
+      <Text style={{ ...baseStyles.paragraph, marginTop: 0 }}>
+        {userName ? `Hi ${userName},` : 'Hi,'}
+      </Text>
+      <Text style={baseStyles.paragraph}>
+        Your credit purchase of <strong>{dollarsToCredits(amount).toLocaleString()} credits</strong>{' '}
+        has been confirmed.
+      </Text>
+
+      <Section style={baseStyles.infoBox}>
+        <Text
+          style={{
+            margin: 0,
+            fontSize: '14px',
+            color: colors.textMuted,
+            fontFamily: baseStyles.fontFamily,
+          }}
+        >
+          Amount Added
+        </Text>
+        <Text
+          style={{
+            margin: '4px 0 16px',
+            fontSize: '24px',
+            fontWeight: 'bold',
+            color: colors.textPrimary,
+            fontFamily: baseStyles.fontFamily,
+          }}
+        >
+          {dollarsToCredits(amount).toLocaleString()} credits
+        </Text>
+        <Text
+          style={{
+            margin: 0,
+            fontSize: '14px',
+            color: colors.textMuted,
+            fontFamily: baseStyles.fontFamily,
+          }}
+        >
+          New Balance
+        </Text>
+        <Text
+          style={{
+            margin: '4px 0 0',
+            fontSize: '24px',
+            fontWeight: 'bold',
+            color: colors.textPrimary,
+            fontFamily: baseStyles.fontFamily,
+          }}
+        >
+          {dollarsToCredits(newBalance).toLocaleString()} credits
+        </Text>
+      </Section>
+
+      <Text style={baseStyles.paragraph}>
+        Credits are applied automatically to your workflow executions.
+      </Text>
+
+      <Link href={`${baseUrl}/workspace`} style={{ textDecoration: 'none' }}>
+        <Text style={baseStyles.button}>View Dashboard</Text>
+      </Link>
+
+      {/* Divider */}
+      <div style={baseStyles.divider} />
+
+      <Text style={{ ...baseStyles.footerText, textAlign: 'left' }}>
+        Purchased on {purchaseDate.toLocaleDateString()}. View balance in Settings → Subscription.
+      </Text>
+    </EmailLayout>
+  )
+}
+
+export default CreditPurchaseEmail

apps/sim/components/emails/billing/credits-exhausted-email.tsx

@@ -0,0 +1,102 @@
+import { Link, Section, Text } from '@react-email/components'
+import { baseStyles, colors, typography } from '@/components/emails/_styles'
+import { proFeatures } from '@/components/emails/billing/constants'
+import { EmailLayout } from '@/components/emails/components'
+import { dollarsToCredits } from '@/lib/billing/credits/conversion'
+import { getBrandConfig } from '@/ee/whitelabeling'
+
+interface CreditsExhaustedEmailProps {
+  userName?: string
+  limit: number
+  upgradeLink: string
+}
+
+export function CreditsExhaustedEmail({
+  userName,
+  limit,
+  upgradeLink,
+}: CreditsExhaustedEmailProps) {
+  const brand = getBrandConfig()
+
+  return (
+    <EmailLayout
+      preview={`You've used all ${dollarsToCredits(limit).toLocaleString()} of your free ${brand.name} credits`}
+      showUnsubscribe={true}
+    >
+      <Text style={{ ...baseStyles.paragraph, marginTop: 0 }}>
+        {userName ? `Hi ${userName},` : 'Hi,'}
+      </Text>
+
+      <Text style={baseStyles.paragraph}>
+        You&apos;ve used all <strong>{dollarsToCredits(limit).toLocaleString()}</strong> of your
+        free credits on {brand.name}. Your workflows are paused until you upgrade.
+      </Text>
+
+      <Section
+        style={{
+          backgroundColor: colors.surfaceSubtle,
+          border: `1px solid ${colors.brandTertiary}20`,
+          borderRadius: '8px',
+          padding: '16px 20px',
+          margin: '16px 0',
+        }}
+      >
+        <Text
+          style={{
+            fontSize: '14px',
+            fontWeight: 600,
+            color: colors.brandTertiary,
+            fontFamily: typography.fontFamily,
+            margin: '0 0 12px 0',
+            textTransform: 'uppercase' as const,
+            letterSpacing: '0.5px',
+          }}
+        >
+          Pro includes
+        </Text>
+        <table style={{ width: '100%', borderCollapse: 'collapse' }}>
+          <tbody>
+            {proFeatures.map((feature, i) => (
+              <tr key={i}>
+                <td
+                  style={{
+                    padding: '6px 0',
+                    fontSize: '15px',
+                    fontWeight: 600,
+                    color: colors.textPrimary,
+                    fontFamily: typography.fontFamily,
+                    width: '45%',
+                  }}
+                >
+                  {feature.label}
+                </td>
+                <td
+                  style={{
+                    padding: '6px 0',
+                    fontSize: '14px',
+                    color: colors.textMuted,
+                    fontFamily: typography.fontFamily,
+                  }}
+                >
+                  {feature.desc}
+                </td>
+              </tr>
+            ))}
+          </tbody>
+        </table>
+      </Section>
+
+      <Link href={upgradeLink} style={{ textDecoration: 'none' }}>
+        <Text style={baseStyles.button}>Upgrade to Pro</Text>
+      </Link>
+
+      <div style={baseStyles.divider} />
+
+      <Text style={{ ...baseStyles.footerText, textAlign: 'left' }}>
+        One-time notification when free credits are exhausted.
+      </Text>
+    </EmailLayout>
+  )
+}
+
+export default CreditsExhaustedEmail

apps/sim/components/emails/billing/enterprise-subscription-email.tsx

@@ -0,0 +1,54 @@
+import { Link, Text } from '@react-email/components'
+import { baseStyles } from '@/components/emails/_styles'
+import { EmailLayout } from '@/components/emails/components'
+import { getBaseUrl } from '@/lib/core/utils/urls'
+import { getBrandConfig } from '@/ee/whitelabeling'
+
+interface EnterpriseSubscriptionEmailProps {
+  userName?: string
+  loginLink?: string
+}
+
+export function EnterpriseSubscriptionEmail({
+  userName = 'Valued User',
+  loginLink,
+}: EnterpriseSubscriptionEmailProps) {
+  const brand = getBrandConfig()
+  const baseUrl = getBaseUrl()
+  const effectiveLoginLink = loginLink || `${baseUrl}/login`
+
+  return (
+    <EmailLayout
+      preview={`Your Enterprise Plan is now active on ${brand.name}`}
+      showUnsubscribe={false}
+    >
+      <Text style={baseStyles.paragraph}>Hello {userName},</Text>
+      <Text style={baseStyles.paragraph}>
+        Your <strong>Enterprise Plan</strong> is now active. You have full access to advanced
+        features and increased capacity for your workflows.
+      </Text>
+
+      <Link href={effectiveLoginLink} style={{ textDecoration: 'none' }}>
+        <Text style={baseStyles.button}>Open {brand.name}</Text>
+      </Link>
+
+      <Text style={baseStyles.paragraph}>
+        <strong>Next steps:</strong>
+        <br />• Invite teammates to your organization
+        <br />• Start building your workflows
+      </Text>
+
+      {/* Divider */}
+      <div style={baseStyles.divider} />
+
+      <Text style={{ ...baseStyles.footerText, textAlign: 'left' }}>
+        Questions? Reply to this email or contact us at{' '}
+        <Link href={`mailto:${brand.supportEmail}`} style={baseStyles.link}>
+          {brand.supportEmail}
+        </Link>
+      </Text>
+    </EmailLayout>
+  )
+}
+
+export default EnterpriseSubscriptionEmail

apps/sim/components/emails/billing/free-tier-upgrade-email.tsx

@@ -0,0 +1,108 @@
+import { Link, Section, Text } from '@react-email/components'
+import { baseStyles, colors, typography } from '@/components/emails/_styles'
+import { proFeatures } from '@/components/emails/billing/constants'
+import { EmailLayout } from '@/components/emails/components'
+import { dollarsToCredits } from '@/lib/billing/credits/conversion'
+import { getBrandConfig } from '@/ee/whitelabeling'
+
+interface FreeTierUpgradeEmailProps {
+  userName?: string
+  percentUsed: number
+  currentUsage: number
+  limit: number
+  upgradeLink: string
+}
+
+export function FreeTierUpgradeEmail({
+  userName,
+  percentUsed,
+  currentUsage,
+  limit,
+  upgradeLink,
+}: FreeTierUpgradeEmailProps) {
+  const brand = getBrandConfig()
+
+  const previewText = `${brand.name}: You've used ${percentUsed}% of your free credits`
+
+  return (
+    <EmailLayout preview={previewText} showUnsubscribe={true}>
+      <Text style={{ ...baseStyles.paragraph, marginTop: 0 }}>
+        {userName ? `Hi ${userName},` : 'Hi,'}
+      </Text>
+
+      <Text style={baseStyles.paragraph}>
+        You've used <strong>{dollarsToCredits(currentUsage).toLocaleString()}</strong> of your{' '}
+        <strong>{dollarsToCredits(limit).toLocaleString()}</strong> free credits ({percentUsed}%).
+        Upgrade to Pro to keep building without interruption.
+      </Text>
+
+      {/* Pro Features */}
+      <Section
+        style={{
+          backgroundColor: colors.surfaceSubtle,
+          border: `1px solid ${colors.brandTertiary}20`,
+          borderRadius: '8px',
+          padding: '16px 20px',
+          margin: '16px 0',
+        }}
+      >
+        <Text
+          style={{
+            fontSize: '14px',
+            fontWeight: 600,
+            color: colors.brandTertiary,
+            fontFamily: typography.fontFamily,
+            margin: '0 0 12px 0',
+            textTransform: 'uppercase' as const,
+            letterSpacing: '0.5px',
+          }}
+        >
+          Pro includes
+        </Text>
+        <table style={{ width: '100%', borderCollapse: 'collapse' }}>
+          <tbody>
+            {proFeatures.map((feature, i) => (
+              <tr key={i}>
+                <td
+                  style={{
+                    padding: '6px 0',
+                    fontSize: '15px',
+                    fontWeight: 600,
+                    color: colors.textPrimary,
+                    fontFamily: typography.fontFamily,
+                    width: '45%',
+                  }}
+                >
+                  {feature.label}
+                </td>
+                <td
+                  style={{
+                    padding: '6px 0',
+                    fontSize: '14px',
+                    color: colors.textMuted,
+                    fontFamily: typography.fontFamily,
+                  }}
+                >
+                  {feature.desc}
+                </td>
+              </tr>
+            ))}
+          </tbody>
+        </table>
+      </Section>
+
+      <Link href={upgradeLink} style={{ textDecoration: 'none' }}>
+        <Text style={baseStyles.button}>Upgrade to Pro</Text>
+      </Link>
+
+      {/* Divider */}
+      <div style={baseStyles.divider} />
+
+      <Text style={{ ...baseStyles.footerText, textAlign: 'left' }}>
+        One-time notification at 80% usage.
+      </Text>
+    </EmailLayout>
+  )
+}
+
+export default FreeTierUpgradeEmail

apps/sim/components/emails/billing/index.ts

@@ -0,0 +1,9 @@
+export { AbandonedCheckoutEmail } from './abandoned-checkout-email'
+export { CreditPurchaseEmail } from './credit-purchase-email'
+export { CreditsExhaustedEmail } from './credits-exhausted-email'
+export { EnterpriseSubscriptionEmail } from './enterprise-subscription-email'
+export { FreeTierUpgradeEmail } from './free-tier-upgrade-email'
+export { LimitThresholdEmail } from './limit-threshold-email'
+export { PaymentFailedEmail } from './payment-failed-email'
+export { PlanWelcomeEmail } from './plan-welcome-email'
+export { UsageThresholdEmail } from './usage-threshold-email'

apps/sim/components/emails/billing/limit-threshold-email.tsx

@@ -0,0 +1,76 @@
+import { Link, Section, Text } from '@react-email/components'
+import { baseStyles } from '@/components/emails/_styles'
+import { EmailLayout } from '@/components/emails/components'
+import { UPGRADE_REASON_COPY, type UpgradeReason } from '@/lib/billing/upgrade-reasons'
+import { getBrandConfig } from '@/ee/whitelabeling'
+
+interface LimitThresholdEmailProps {
+  /** `warning` = approaching the limit (~80%); `reached` = at/over the limit. */
+  kind: 'warning' | 'reached'
+  /** Limit category, drives the shared copy. */
+  reason: UpgradeReason
+  userName?: string
+  /** Pre-formatted current usage, e.g. "4.2 GB", "48,000 rows", "9 seats". */
+  usageLabel: string
+  /** Pre-formatted limit, e.g. "5 GB", "50,000 rows", "10 seats". */
+  limitLabel: string
+  percentUsed: number
+  upgradeLink: string
+}
+
+/**
+ * Single template for the per-category usage-limit emails (storage, tables,
+ * seats). Copy comes from {@link UPGRADE_REASON_COPY} so the email language
+ * matches the upgrade-page header the user lands on.
+ */
+export function LimitThresholdEmail({
+  kind,
+  reason,
+  userName,
+  usageLabel,
+  limitLabel,
+  percentUsed,
+  upgradeLink,
+}: LimitThresholdEmailProps) {
+  const brand = getBrandConfig()
+  const copy = UPGRADE_REASON_COPY[reason]
+  const lead = kind === 'reached' ? copy.reachedLead : copy.warningLead
+  const previewText = `${brand.name}: ${lead}`
+
+  return (
+    <EmailLayout preview={previewText} showUnsubscribe={true}>
+      <Text style={{ ...baseStyles.paragraph, marginTop: 0 }}>
+        {userName ? `Hi ${userName},` : 'Hi,'}
+      </Text>
+
+      <Text style={baseStyles.paragraph}>
+        {lead} Upgrade your plan for more {copy.noun}.
+      </Text>
+
+      <Section style={baseStyles.infoBox}>
+        <Text style={baseStyles.infoBoxTitle}>Usage</Text>
+        <Text style={baseStyles.infoBoxList}>
+          {usageLabel} of {limitLabel} used ({percentUsed}%)
+        </Text>
+      </Section>
+
+      {/* Divider */}
+      <div style={baseStyles.divider} />
+
+      <Link href={upgradeLink} style={{ textDecoration: 'none' }}>
+        <Text style={baseStyles.button}>Upgrade</Text>
+      </Link>
+
+      {/* Divider */}
+      <div style={baseStyles.divider} />
+
+      <Text style={{ ...baseStyles.footerText, textAlign: 'left' }}>
+        {kind === 'reached'
+          ? 'One-time notification at 100% usage.'
+          : 'One-time notification at 80% usage.'}
+      </Text>
+    </EmailLayout>
+  )
+}
+
+export default LimitThresholdEmail

apps/sim/components/emails/billing/payment-failed-email.tsx

@@ -0,0 +1,109 @@
+import { Link, Section, Text } from '@react-email/components'
+import { baseStyles, colors } from '@/components/emails/_styles'
+import { EmailLayout } from '@/components/emails/components'
+import { getBrandConfig } from '@/ee/whitelabeling'
+
+interface PaymentFailedEmailProps {
+  userName?: string
+  amountDue: number
+  lastFourDigits?: string
+  billingPortalUrl: string
+  failureReason?: string
+  sentDate?: Date
+}
+
+export function PaymentFailedEmail({
+  userName,
+  amountDue,
+  lastFourDigits,
+  billingPortalUrl,
+  failureReason,
+  sentDate = new Date(),
+}: PaymentFailedEmailProps) {
+  const brand = getBrandConfig()
+
+  const previewText = `${brand.name}: Payment Failed - Action Required`
+
+  return (
+    <EmailLayout preview={previewText} showUnsubscribe={false}>
+      <Text style={{ ...baseStyles.paragraph, marginTop: 0 }}>
+        {userName ? `Hi ${userName},` : 'Hi,'}
+      </Text>
+
+      <Text
+        style={{
+          ...baseStyles.paragraph,
+          fontSize: '16px',
+          fontWeight: 600,
+          color: colors.textPrimary,
+        }}
+      >
+        We were unable to process your payment.
+      </Text>
+
+      <Text style={baseStyles.paragraph}>
+        Your {brand.name} account has been temporarily blocked to prevent service interruptions and
+        unexpected charges. To restore access immediately, please update your payment method.
+      </Text>
+
+      <Section
+        style={{
+          backgroundColor: colors.errorBg,
+          border: `1px solid ${colors.errorBorder}`,
+          borderRadius: '6px',
+          padding: '16px 18px',
+          margin: '16px 0',
+        }}
+      >
+        <Text
+          style={{
+            ...baseStyles.paragraph,
+            marginBottom: 8,
+            marginTop: 0,
+            fontWeight: 'bold',
+          }}
+        >
+          Payment Details
+        </Text>
+        <Text style={{ ...baseStyles.paragraph, margin: '4px 0' }}>
+          Amount due: ${amountDue.toFixed(2)}
+        </Text>
+        {lastFourDigits && (
+          <Text style={{ ...baseStyles.paragraph, margin: '4px 0' }}>
+            Payment method: •••• {lastFourDigits}
+          </Text>
+        )}
+        {failureReason && (
+          <Text style={{ ...baseStyles.paragraph, margin: '4px 0' }}>Reason: {failureReason}</Text>
+        )}
+      </Section>
+
+      <Link href={billingPortalUrl} style={{ textDecoration: 'none' }}>
+        <Text style={baseStyles.button}>Update Payment Method</Text>
+      </Link>
+
+      {/* Divider */}
+      <div style={baseStyles.divider} />
+
+      <Text style={{ ...baseStyles.paragraph, fontWeight: 'bold' }}>What happens next?</Text>
+
+      <Text style={baseStyles.paragraph}>
+        • Your workflows and automations are currently paused
+        <br />• Update your payment method to restore service immediately
+        <br />• Stripe will automatically retry the charge once payment is updated
+      </Text>
+
+      {/* Divider */}
+      <div style={baseStyles.divider} />
+
+      <Text style={{ ...baseStyles.footerText, textAlign: 'left' }}>
+        Common issues: expired card, insufficient funds, or incorrect billing info. Need help?{' '}
+        <Link href={`mailto:${brand.supportEmail}`} style={baseStyles.link}>
+          {brand.supportEmail}
+        </Link>
+      </Text>
+    </EmailLayout>
+  )
+}
+
+export default PaymentFailedEmail

apps/sim/components/emails/billing/plan-welcome-email.tsx

@@ -0,0 +1,52 @@
+import { Link, Text } from '@react-email/components'
+import { baseStyles } from '@/components/emails/_styles'
+import { EmailLayout } from '@/components/emails/components'
+import { getBaseUrl } from '@/lib/core/utils/urls'
+import { getBrandConfig } from '@/ee/whitelabeling'
+
+interface PlanWelcomeEmailProps {
+  planName: string
+  userName?: string
+  loginLink?: string
+}
+
+export function PlanWelcomeEmail({ planName, userName, loginLink }: PlanWelcomeEmailProps) {
+  const brand = getBrandConfig()
+  const baseUrl = getBaseUrl()
+  const cta = loginLink || `${baseUrl}/login`
+
+  const previewText = `${brand.name}: Your ${planName} plan is active`
+
+  return (
+    <EmailLayout preview={previewText} showUnsubscribe={true}>
+      <Text style={{ ...baseStyles.paragraph, marginTop: 0 }}>
+        {userName ? `Hi ${userName},` : 'Hi,'}
+      </Text>
+      <Text style={baseStyles.paragraph}>
+        Welcome to <strong>{planName}</strong>! You're all set to build, test, and scale your
+        workflows.
+      </Text>
+
+      <Link href={cta} style={{ textDecoration: 'none' }}>
+        <Text style={baseStyles.button}>Open {brand.name}</Text>
+      </Link>
+
+      <Text style={baseStyles.paragraph}>
+        Want help getting started?{' '}
+        <Link href={`${baseUrl}/team`} style={baseStyles.link}>
+          Schedule a call
+        </Link>{' '}
+        with our team.
+      </Text>
+
+      {/* Divider */}
+      <div style={baseStyles.divider} />
+
+      <Text style={{ ...baseStyles.footerText, textAlign: 'left' }}>
+        Manage your subscription in Settings → Subscription.
+      </Text>
+    </EmailLayout>
+  )
+}
+
+export default PlanWelcomeEmail

apps/sim/components/emails/billing/usage-threshold-email.tsx

@@ -0,0 +1,67 @@
+import { Link, Section, Text } from '@react-email/components'
+import { baseStyles } from '@/components/emails/_styles'
+import { EmailLayout } from '@/components/emails/components'
+import { dollarsToCredits } from '@/lib/billing/credits/conversion'
+import { getBrandConfig } from '@/ee/whitelabeling'
+
+interface UsageThresholdEmailProps {
+  userName?: string
+  planName: string
+  percentUsed: number
+  currentUsage: number
+  limit: number
+  ctaLink: string
+}
+
+export function UsageThresholdEmail({
+  userName,
+  planName,
+  percentUsed,
+  currentUsage,
+  limit,
+  ctaLink,
+}: UsageThresholdEmailProps) {
+  const brand = getBrandConfig()
+
+  const previewText = `${brand.name}: You're at ${percentUsed}% of your ${planName} monthly budget`
+
+  return (
+    <EmailLayout preview={previewText} showUnsubscribe={true}>
+      <Text style={{ ...baseStyles.paragraph, marginTop: 0 }}>
+        {userName ? `Hi ${userName},` : 'Hi,'}
+      </Text>
+
+      <Text style={baseStyles.paragraph}>
+        You're approaching your monthly budget on the {planName} plan.
+      </Text>
+
+      <Section style={baseStyles.infoBox}>
+        <Text style={baseStyles.infoBoxTitle}>Usage</Text>
+        <Text style={baseStyles.infoBoxList}>
+          {dollarsToCredits(currentUsage).toLocaleString()} of{' '}
+          {dollarsToCredits(limit).toLocaleString()} credits used ({percentUsed}%)
+        </Text>
+      </Section>
+
+      {/* Divider */}
+      <div style={baseStyles.divider} />
+
+      <Text style={baseStyles.paragraph}>
+        To avoid interruptions, consider increasing your monthly limit.
+      </Text>
+
+      <Link href={ctaLink} style={{ textDecoration: 'none' }}>
+        <Text style={baseStyles.button}>Review Limits</Text>
+      </Link>
+
+      {/* Divider */}
+      <div style={baseStyles.divider} />
+
+      <Text style={{ ...baseStyles.footerText, textAlign: 'left' }}>
+        One-time notification at 80% usage.
+      </Text>
+    </EmailLayout>
+  )
+}
+
+export default UsageThresholdEmail

apps/sim/components/emails/components/email-footer.tsx

@@ -0,0 +1,253 @@
+import { Container, Img, Link, Section } from '@react-email/components'
+import { baseStyles, colors, spacing, typography } from '@/components/emails/_styles'
+import { isHosted } from '@/lib/core/config/env-flags'
+import { getBaseUrl } from '@/lib/core/utils/urls'
+import { getBrandConfig } from '@/ee/whitelabeling'
+
+interface EmailFooterProps {
+  baseUrl?: string
+  messageId?: string
+  /**
+   * Whether to show unsubscribe link. Defaults to true.
+   * Set to false for transactional emails where unsubscribe doesn't apply.
+   */
+  showUnsubscribe?: boolean
+}
+
+/**
+ * Email footer component styled to match Stripe's email design.
+ * Sits in the gray area below the main white card.
+ *
+ * For non-transactional emails, the unsubscribe link uses placeholders
+ * {{UNSUBSCRIBE_TOKEN}} and {{UNSUBSCRIBE_EMAIL}} which are replaced
+ * by the mailer when sending.
+ */
+export function EmailFooter({
+  baseUrl = getBaseUrl(),
+  messageId,
+  showUnsubscribe = true,
+}: EmailFooterProps) {
+  const brand = getBrandConfig()
+  const isWhitelabeled = brand.isWhitelabeled
+
+  const footerLinkStyle = {
+    color: colors.textMuted,
+    textDecoration: 'underline',
+    fontWeight: 'normal' as const,
+    fontFamily: typography.fontFamily,
+  }
+
+  return (
+    <Section
+      style={{
+        backgroundColor: colors.footerBg,
+        width: '100%',
+      }}
+    >
+      <Container style={{ maxWidth: `${spacing.containerWidth}px`, margin: '0 auto' }}>
+        <table
+          cellPadding={0}
+          cellSpacing={0}
+          border={0}
+          width='100%'
+          style={{ minWidth: `${spacing.containerWidth}px` }}
+        >
+          <tbody>
+            <tr>
+              <td style={baseStyles.spacer} height={32}>
+                &nbsp;
+              </td>
+            </tr>
+
+            {/* Social links row — hidden for whitelabeled instances */}
+            {!isWhitelabeled && (
+              <>
+                <tr>
+                  <td style={baseStyles.gutter} width={spacing.gutter}>
+                    &nbsp;
+                  </td>
+                  <td>
+                    <table cellPadding={0} cellSpacing={0} style={{ border: 0 }}>
+                      <tbody>
+                        <tr>
+                          <td align='left' style={{ padding: '0 8px 0 0' }}>
+                            <Link href={`${baseUrl}/x`} rel='noopener noreferrer'>
+                              <Img
+                                src={`${baseUrl}/static/x-icon.png`}
+                                width='20'
+                                height='20'
+                                alt='X'
+                              />
+                            </Link>
+                          </td>
+                          <td align='left' style={{ padding: '0 8px' }}>
+                            <Link
+                              href='https://www.linkedin.com/company/simdotai'
+                              rel='noopener noreferrer'
+                            >
+                              <Img
+                                src={`${baseUrl}/static/linkedin-icon.png`}
+                                width='20'
+                                height='20'
+                                alt='LinkedIn'
+                              />
+                            </Link>
+                          </td>
+                          <td align='left' style={{ padding: '0 8px' }}>
+                            <Link href={`${baseUrl}/github`} rel='noopener noreferrer'>
+                              <Img
+                                src={`${baseUrl}/static/github-icon.png`}
+                                width='20'
+                                height='20'
+                                alt='GitHub'
+                              />
+                            </Link>
+                          </td>
+                        </tr>
+                      </tbody>
+                    </table>
+                  </td>
+                  <td style={baseStyles.gutter} width={spacing.gutter}>
+                    &nbsp;
+                  </td>
+                </tr>
+
+                <tr>
+                  <td style={baseStyles.spacer} height={16}>
+                    &nbsp;
+                  </td>
+                </tr>
+              </>
+            )}
+
+            {/* Address row — hidden for whitelabeled instances */}
+            {!isWhitelabeled && (
+              <>
+                <tr>
+                  <td style={baseStyles.gutter} width={spacing.gutter}>
+                    &nbsp;
+                  </td>
+                  <td style={baseStyles.footerText}>
+                    {brand.name}
+                    {isHosted && <>, 80 Langton St, San Francisco, CA 94103, USA</>}
+                  </td>
+                  <td style={baseStyles.gutter} width={spacing.gutter}>
+                    &nbsp;
+                  </td>
+                </tr>
+
+                <tr>
+                  <td style={baseStyles.spacer} height={8}>
+                    &nbsp;
+                  </td>
+                </tr>
+              </>
+            )}
+
+            {/* Contact row */}
+            <tr>
+              <td style={baseStyles.gutter} width={spacing.gutter}>
+                &nbsp;
+              </td>
+              <td style={baseStyles.footerText}>
+                Questions?{' '}
+                <a href={`mailto:${brand.supportEmail}`} style={footerLinkStyle}>
+                  {brand.supportEmail}
+                </a>
+              </td>
+              <td style={baseStyles.gutter} width={spacing.gutter}>
+                &nbsp;
+              </td>
+            </tr>
+
+            <tr>
+              <td style={baseStyles.spacer} height={8}>
+                &nbsp;
+              </td>
+            </tr>
+
+            {/* Message ID row (optional) */}
+            {messageId && (
+              <>
+                <tr>
+                  <td style={baseStyles.gutter} width={spacing.gutter}>
+                    &nbsp;
+                  </td>
+                  <td style={baseStyles.footerText}>
+                    Need to refer to this message? Use this ID: {messageId}
+                  </td>
+                  <td style={baseStyles.gutter} width={spacing.gutter}>
+                    &nbsp;
+                  </td>
+                </tr>
+                <tr>
+                  <td style={baseStyles.spacer} height={8}>
+                    &nbsp;
+                  </td>
+                </tr>
+              </>
+            )}
+
+            {/* Links row */}
+            <tr>
+              <td style={baseStyles.gutter} width={spacing.gutter}>
+                &nbsp;
+              </td>
+              <td style={baseStyles.footerText}>
+                <a href={`${baseUrl}/privacy`} style={footerLinkStyle} rel='noopener noreferrer'>
+                  Privacy Policy
+                </a>{' '}
+                •{' '}
+                <a href={`${baseUrl}/terms`} style={footerLinkStyle} rel='noopener noreferrer'>
+                  Terms of Service
+                </a>
+                {showUnsubscribe && (
+                  <>
+                    {' '}
+                    •{' '}
+                    <a
+                      href={`${baseUrl}/unsubscribe?token={{UNSUBSCRIBE_TOKEN}}&email={{UNSUBSCRIBE_EMAIL}}`}
+                      style={footerLinkStyle}
+                      rel='noopener noreferrer'
+                    >
+                      Unsubscribe
+                    </a>
+                  </>
+                )}
+              </td>
+              <td style={baseStyles.gutter} width={spacing.gutter}>
+                &nbsp;
+              </td>
+            </tr>
+
+            {/* Copyright row */}
+            <tr>
+              <td style={baseStyles.spacer} height={16}>
+                &nbsp;
+              </td>
+            </tr>
+            <tr>
+              <td style={baseStyles.gutter} width={spacing.gutter}>
+                &nbsp;
+              </td>
+              <td style={baseStyles.footerText}>
+                © {new Date().getFullYear()} {brand.name}, All Rights Reserved
+              </td>
+              <td style={baseStyles.gutter} width={spacing.gutter}>
+                &nbsp;
+              </td>
+            </tr>
+
+            <tr>
+              <td style={baseStyles.spacer} height={32}>
+                &nbsp;
+              </td>
+            </tr>
+          </tbody>
+        </table>
+      </Container>
+    </Section>
+  )
+}
+
+export default EmailFooter

apps/sim/components/emails/components/email-layout.tsx

@@ -0,0 +1,75 @@
+import { Body, Container, Font, Head, Html, Img, Preview, Section } from '@react-email/components'
+import { baseStyles } from '@/components/emails/_styles'
+import { EmailFooter } from '@/components/emails/components/email-footer'
+import { getBaseUrl } from '@/lib/core/utils/urls'
+import { getBrandConfig } from '@/ee/whitelabeling'
+
+interface EmailLayoutProps {
+  /** Preview text shown in email client list view */
+  preview: string
+  /** Email content to render inside the layout */
+  children: React.ReactNode
+  /** Optional: hide footer for internal emails */
+  hideFooter?: boolean
+  /**
+   * Whether to show unsubscribe link in footer.
+   * Set to false for transactional emails where unsubscribe doesn't apply.
+   */
+  showUnsubscribe: boolean
+}
+
+/**
+ * Shared email layout wrapper providing consistent structure.
+ * Includes Html, Head, Body, Container with logo header, and Footer.
+ */
+export function EmailLayout({
+  preview,
+  children,
+  hideFooter = false,
+  showUnsubscribe,
+}: EmailLayoutProps) {
+  const brand = getBrandConfig()
+  const baseUrl = getBaseUrl()
+  const hasCustomLogo = Boolean(brand.logoUrl)
+
+  return (
+    <Html>
+      <Head>
+        <Font
+          fontFamily='Season Sans'
+          fallbackFontFamily={['Helvetica', 'sans-serif']}
+          webFont={{
+            url: `${baseUrl}/brand/fonts/SeasonSansUprightsVF.woff2`,
+            format: 'woff2',
+          }}
+          fontWeight='300 800'
+          fontStyle='normal'
+        />
+      </Head>
+      <Preview>{preview}</Preview>
+      <Body style={baseStyles.main}>
+        {/* Main card container */}
+        <Container style={baseStyles.container}>
+          {/* Header with logo */}
+          <Section style={baseStyles.header}>
+            <Img
+              src={brand.logoUrl || `${baseUrl}/brand/color/email/wordmark.png`}
+              height='34'
+              {...(hasCustomLogo ? {} : { width: '70' })}
+              alt={brand.name}
+              style={hasCustomLogo ? { display: 'block', width: 'auto' } : { display: 'block' }}
+            />
+          </Section>
+
+          {/* Content */}
+          <Section style={baseStyles.content}>{children}</Section>
+        </Container>
+
+        {/* Footer in gray section */}
+        {!hideFooter && <EmailFooter baseUrl={baseUrl} showUnsubscribe={showUnsubscribe} />}
+      </Body>
+    </Html>
+  )
+}
+
+export default EmailLayout

apps/sim/components/emails/components/index.ts

@@ -0,0 +1,2 @@
+export { EmailFooter } from './email-footer'
+export { EmailLayout } from './email-layout'

apps/sim/components/emails/index.ts

@@ -0,0 +1,15 @@
+// Styles
+export * from './_styles'
+// Auth emails
+export * from './auth'
+// Billing emails
+export * from './billing'
+// Shared components
+export * from './components'
+// Invitation emails
+export * from './invitations'
+// Render functions and subjects
+export * from './render'
+export * from './subjects'
+// Support emails
+export * from './support'

apps/sim/components/emails/invitations/batch-invitation-email.tsx

@@ -0,0 +1,108 @@
+import { Link, Text } from '@react-email/components'
+import { baseStyles } from '@/components/emails/_styles'
+import { EmailLayout } from '@/components/emails/components'
+import { getBrandConfig } from '@/ee/whitelabeling'
+
+interface WorkspaceInvitation {
+  workspaceId: string
+  workspaceName: string
+  permission: 'admin' | 'write' | 'read'
+}
+
+interface BatchInvitationEmailProps {
+  inviterName: string
+  organizationName: string
+  organizationRole: 'admin' | 'member'
+  workspaceInvitations: WorkspaceInvitation[]
+  acceptUrl: string
+}
+
+const getPermissionLabel = (permission: string) => {
+  switch (permission) {
+    case 'admin':
+      return 'Admin (full access)'
+    case 'write':
+      return 'Editor (can edit workflows)'
+    case 'read':
+      return 'Viewer (read-only access)'
+    default:
+      return permission
+  }
+}
+
+const getRoleLabel = (role: string) => {
+  switch (role) {
+    case 'admin':
+      return 'Admin'
+    case 'member':
+      return 'Member'
+    default:
+      return role
+  }
+}
+
+const EMPTY_INVITATIONS: WorkspaceInvitation[] = []
+
+export function BatchInvitationEmail({
+  inviterName = 'Someone',
+  organizationName = 'the team',
+  organizationRole = 'member',
+  workspaceInvitations = EMPTY_INVITATIONS,
+  acceptUrl,
+}: BatchInvitationEmailProps) {
+  const brand = getBrandConfig()
+  const hasWorkspaces = workspaceInvitations.length > 0
+
+  return (
+    <EmailLayout
+      preview={`You've been invited to join ${organizationName}${hasWorkspaces ? ` and ${workspaceInvitations.length} workspace(s)` : ''}`}
+      showUnsubscribe={false}
+    >
+      <Text style={baseStyles.paragraph}>Hello,</Text>
+      <Text style={baseStyles.paragraph}>
+        <strong>{inviterName}</strong> has invited you to join <strong>{organizationName}</strong>{' '}
+        on {brand.name}.
+      </Text>
+
+      {/* Team Role Information */}
+      <Text style={baseStyles.paragraph}>
+        <strong>Team Role:</strong> {getRoleLabel(organizationRole)}
+      </Text>
+      <Text style={baseStyles.paragraph}>
+        {organizationRole === 'admin'
+          ? "As a Team Admin, you'll be able to manage team members, billing, and workspace access."
+          : "As a Team Member, you'll have access to shared team billing and can be invited to workspaces."}
+      </Text>
+
+      {/* Workspace Invitations */}
+      {hasWorkspaces && (
+        <>
+          <Text style={baseStyles.paragraph}>
+            <strong>
+              Workspace Access ({workspaceInvitations.length} workspace
+              {workspaceInvitations.length !== 1 ? 's' : ''}):
+            </strong>
+          </Text>
+          {workspaceInvitations.map((ws) => (
+            <Text key={ws.workspaceId} style={{ ...baseStyles.paragraph, marginLeft: '20px' }}>
+              • <strong>{ws.workspaceName}</strong> - {getPermissionLabel(ws.permission)}
+            </Text>
+          ))}
+        </>
+      )}
+
+      <Link href={acceptUrl} style={{ textDecoration: 'none' }}>
+        <Text style={baseStyles.button}>Accept Invitation</Text>
+      </Link>
+
+      {/* Divider */}
+      <div style={baseStyles.divider} />
+
+      <Text style={{ ...baseStyles.footerText, textAlign: 'left' }}>
+        Invitation expires in 7 days. If unexpected, you can ignore this email.
+      </Text>
+    </EmailLayout>
+  )
+}
+
+export default BatchInvitationEmail

apps/sim/components/emails/invitations/index.ts

@@ -0,0 +1,4 @@
+export { BatchInvitationEmail } from './batch-invitation-email'
+export { InvitationEmail } from './invitation-email'
+export { WorkspaceAddedEmail } from './workspace-added-email'
+export { WorkspaceInvitationEmail } from './workspace-invitation-email'

apps/sim/components/emails/invitations/invitation-email.tsx

@@ -0,0 +1,63 @@
+import { Link, Text } from '@react-email/components'
+import { createLogger } from '@sim/logger'
+import { baseStyles } from '@/components/emails/_styles'
+import { EmailLayout } from '@/components/emails/components'
+import { getBaseUrl } from '@/lib/core/utils/urls'
+import { getBrandConfig } from '@/ee/whitelabeling'
+
+interface InvitationEmailProps {
+  inviterName?: string
+  organizationName?: string
+  inviteLink?: string
+}
+
+const logger = createLogger('InvitationEmail')
+
+export function InvitationEmail({
+  inviterName = 'A team member',
+  organizationName = 'an organization',
+  inviteLink = '',
+}: InvitationEmailProps) {
+  const brand = getBrandConfig()
+  const baseUrl = getBaseUrl()
+
+  let enhancedLink = inviteLink
+
+  if (inviteLink && !inviteLink.includes('token=')) {
+    try {
+      const url = new URL(inviteLink)
+      const invitationId = url.pathname.split('/').pop()
+      if (invitationId) {
+        enhancedLink = `${baseUrl}/invite/${invitationId}?token=${invitationId}`
+      }
+    } catch (e) {
+      logger.error('Error parsing invite link:', e)
+    }
+  }
+
+  return (
+    <EmailLayout
+      preview={`You've been invited to join ${organizationName} on ${brand.name}`}
+      showUnsubscribe={false}
+    >
+      <Text style={baseStyles.paragraph}>Hello,</Text>
+      <Text style={baseStyles.paragraph}>
+        <strong>{inviterName}</strong> invited you to join <strong>{organizationName}</strong> on{' '}
+        {brand.name}.
+      </Text>
+
+      <Link href={enhancedLink} style={{ textDecoration: 'none' }}>
+        <Text style={baseStyles.button}>Accept Invitation</Text>
+      </Link>
+
+      {/* Divider */}
+      <div style={baseStyles.divider} />
+
+      <Text style={{ ...baseStyles.footerText, textAlign: 'left' }}>
+        Invitation expires in 48 hours. If unexpected, you can ignore this email.
+      </Text>
+    </EmailLayout>
+  )
+}
+
+export default InvitationEmail

apps/sim/components/emails/invitations/workspace-added-email.tsx

@@ -0,0 +1,44 @@
+import { Link, Text } from '@react-email/components'
+import { baseStyles } from '@/components/emails/_styles'
+import { EmailLayout } from '@/components/emails/components'
+import { getBrandConfig } from '@/ee/whitelabeling'
+
+interface WorkspaceAddedEmailProps {
+  /** Name of the workspace the recipient was added to. */
+  workspaceName?: string
+  /** Name of the person who added the recipient. */
+  inviterName?: string
+  /** Direct link to the workspace (no acceptance required). */
+  workspaceLink?: string
+}
+
+export function WorkspaceAddedEmail({
+  workspaceName = 'Workspace',
+  inviterName = 'Someone',
+  workspaceLink = '',
+}: WorkspaceAddedEmailProps) {
+  const brand = getBrandConfig()
+  const preview = `You've been added to the "${workspaceName}" workspace on ${brand.name}`
+
+  return (
+    <EmailLayout preview={preview} showUnsubscribe={false}>
+      <Text style={baseStyles.paragraph}>Hello,</Text>
+      <Text style={baseStyles.paragraph}>
+        <strong>{inviterName}</strong> added you to the <strong>{workspaceName}</strong> workspace
+        on {brand.name}.
+      </Text>
+
+      <Link href={workspaceLink} style={{ textDecoration: 'none' }}>
+        <Text style={baseStyles.button}>Open workspace</Text>
+      </Link>
+
+      <div style={baseStyles.divider} />
+
+      <Text style={{ ...baseStyles.footerText, textAlign: 'left' }}>
+        If this was unexpected, contact a workspace admin.
+      </Text>
+    </EmailLayout>
+  )
+}
+
+export default WorkspaceAddedEmail

apps/sim/components/emails/invitations/workspace-invitation-email.tsx

@@ -0,0 +1,56 @@
+import { Link, Text } from '@react-email/components'
+import { baseStyles } from '@/components/emails/_styles'
+import { EmailLayout } from '@/components/emails/components'
+import { getBrandConfig } from '@/ee/whitelabeling'
+
+interface WorkspaceInvitationEmailProps {
+  /** Workspaces this invitation grants access to (one entry per workspace). */
+  workspaceNames?: string[]
+  inviterName?: string
+  invitationLink?: string
+}
+
+export function WorkspaceInvitationEmail({
+  workspaceNames = ['Workspace'],
+  inviterName = 'Someone',
+  invitationLink = '',
+}: WorkspaceInvitationEmailProps) {
+  const brand = getBrandConfig()
+  const isMultiple = workspaceNames.length > 1
+  const preview = isMultiple
+    ? `You've been invited to join ${workspaceNames.length} workspaces on ${brand.name}!`
+    : `You've been invited to join the "${workspaceNames[0]}" workspace on ${brand.name}!`
+
+  return (
+    <EmailLayout preview={preview} showUnsubscribe={false}>
+      <Text style={baseStyles.paragraph}>Hello,</Text>
+      <Text style={baseStyles.paragraph}>
+        <strong>{inviterName}</strong> invited you to join the{' '}
+        {workspaceNames.map((name, index) => (
+          <span key={`${name}-${index}`}>
+            {index > 0 &&
+              (index === workspaceNames.length - 1
+                ? workspaceNames.length > 2
+                  ? ', and '
+                  : ' and '
+                : ', ')}
+            <strong>{name}</strong>
+          </span>
+        ))}{' '}
+        {isMultiple ? 'workspaces' : 'workspace'} on {brand.name}.
+      </Text>
+
+      <Link href={invitationLink} style={{ textDecoration: 'none' }}>
+        <Text style={baseStyles.button}>Accept Invitation</Text>
+      </Link>
+
+      <div style={baseStyles.divider} />
+
+      <Text style={{ ...baseStyles.footerText, textAlign: 'left' }}>
+        Invitation expires in 7 days. If unexpected, you can ignore this email.
+      </Text>
+    </EmailLayout>
+  )
+}
+
+export default WorkspaceInvitationEmail

apps/sim/components/emails/render.ts

@@ -0,0 +1,262 @@
+import { render } from '@react-email/render'
+import {
+  ExistingAccountEmail,
+  OnboardingFollowupEmail,
+  OTPVerificationEmail,
+  ResetPasswordEmail,
+  WelcomeEmail,
+} from '@/components/emails/auth'
+import {
+  AbandonedCheckoutEmail,
+  CreditPurchaseEmail,
+  CreditsExhaustedEmail,
+  EnterpriseSubscriptionEmail,
+  FreeTierUpgradeEmail,
+  LimitThresholdEmail,
+  PaymentFailedEmail,
+  PlanWelcomeEmail,
+  UsageThresholdEmail,
+} from '@/components/emails/billing'
+import {
+  BatchInvitationEmail,
+  InvitationEmail,
+  WorkspaceAddedEmail,
+  WorkspaceInvitationEmail,
+} from '@/components/emails/invitations'
+import { HelpConfirmationEmail } from '@/components/emails/support'
+import type { UpgradeReason } from '@/lib/billing/upgrade-reasons'
+import { getBaseUrl } from '@/lib/core/utils/urls'
+
+export { getEmailSubject, getLimitEmailSubject } from './subjects'
+
+interface WorkspaceInvitation {
+  workspaceId: string
+  workspaceName: string
+  permission: 'admin' | 'write' | 'read'
+}
+
+export async function renderOTPEmail(
+  otp: string,
+  email: string,
+  type:
+    | 'sign-in'
+    | 'email-verification'
+    | 'change-email'
+    | 'forget-password' = 'email-verification',
+  chatTitle?: string
+): Promise<string> {
+  return await render(OTPVerificationEmail({ otp, email, type, chatTitle }))
+}
+
+export async function renderExistingAccountEmail(username: string): Promise<string> {
+  return await render(ExistingAccountEmail({ username }))
+}
+
+export async function renderPasswordResetEmail(
+  username: string,
+  resetLink: string
+): Promise<string> {
+  return await render(ResetPasswordEmail({ username, resetLink }))
+}
+
+export async function renderInvitationEmail(
+  inviterName: string,
+  organizationName: string,
+  invitationUrl: string
+): Promise<string> {
+  return await render(
+    InvitationEmail({
+      inviterName,
+      organizationName,
+      inviteLink: invitationUrl,
+    })
+  )
+}
+
+export async function renderBatchInvitationEmail(
+  inviterName: string,
+  organizationName: string,
+  organizationRole: 'admin' | 'member',
+  workspaceInvitations: WorkspaceInvitation[],
+  acceptUrl: string
+): Promise<string> {
+  return await render(
+    BatchInvitationEmail({
+      inviterName,
+      organizationName,
+      organizationRole,
+      workspaceInvitations,
+      acceptUrl,
+    })
+  )
+}
+
+export async function renderHelpConfirmationEmail(
+  type: 'bug' | 'feedback' | 'feature_request' | 'other',
+  attachmentCount = 0
+): Promise<string> {
+  return await render(
+    HelpConfirmationEmail({
+      type,
+      attachmentCount,
+      submittedDate: new Date(),
+    })
+  )
+}
+
+export async function renderEnterpriseSubscriptionEmail(userName: string): Promise<string> {
+  const baseUrl = getBaseUrl()
+  const loginLink = `${baseUrl}/login`
+
+  return await render(
+    EnterpriseSubscriptionEmail({
+      userName,
+      loginLink,
+    })
+  )
+}
+
+export async function renderUsageThresholdEmail(params: {
+  userName?: string
+  planName: string
+  percentUsed: number
+  currentUsage: number
+  limit: number
+  ctaLink: string
+}): Promise<string> {
+  return await render(
+    UsageThresholdEmail({
+      userName: params.userName,
+      planName: params.planName,
+      percentUsed: params.percentUsed,
+      currentUsage: params.currentUsage,
+      limit: params.limit,
+      ctaLink: params.ctaLink,
+    })
+  )
+}
+
+export async function renderFreeTierUpgradeEmail(params: {
+  userName?: string
+  percentUsed: number
+  currentUsage: number
+  limit: number
+  upgradeLink: string
+}): Promise<string> {
+  return await render(
+    FreeTierUpgradeEmail({
+      userName: params.userName,
+      percentUsed: params.percentUsed,
+      currentUsage: params.currentUsage,
+      limit: params.limit,
+      upgradeLink: params.upgradeLink,
+    })
+  )
+}
+
+export async function renderLimitThresholdEmail(params: {
+  kind: 'warning' | 'reached'
+  reason: UpgradeReason
+  userName?: string
+  usageLabel: string
+  limitLabel: string
+  percentUsed: number
+  upgradeLink: string
+}): Promise<string> {
+  return await render(LimitThresholdEmail(params))
+}
+
+export async function renderPlanWelcomeEmail(params: {
+  planName: string
+  userName?: string
+  loginLink?: string
+}): Promise<string> {
+  return await render(
+    PlanWelcomeEmail({
+      planName: params.planName,
+      userName: params.userName,
+      loginLink: params.loginLink,
+    })
+  )
+}
+
+export async function renderWelcomeEmail(userName?: string): Promise<string> {
+  return await render(WelcomeEmail({ userName }))
+}
+
+export async function renderOnboardingFollowupEmail(userName?: string): Promise<string> {
+  return await render(OnboardingFollowupEmail({ userName }))
+}
+
+export async function renderAbandonedCheckoutEmail(userName?: string): Promise<string> {
+  return await render(AbandonedCheckoutEmail({ userName }))
+}
+
+export async function renderCreditsExhaustedEmail(params: {
+  userName?: string
+  limit: number
+  upgradeLink: string
+}): Promise<string> {
+  return await render(CreditsExhaustedEmail(params))
+}
+
+export async function renderCreditPurchaseEmail(params: {
+  userName?: string
+  amount: number
+  newBalance: number
+}): Promise<string> {
+  return await render(
+    CreditPurchaseEmail({
+      userName: params.userName,
+      amount: params.amount,
+      newBalance: params.newBalance,
+      purchaseDate: new Date(),
+    })
+  )
+}
+
+export async function renderWorkspaceInvitationEmail(
+  inviterName: string,
+  workspaceNames: string[],
+  invitationLink: string
+): Promise<string> {
+  return await render(
+    WorkspaceInvitationEmail({
+      inviterName,
+      workspaceNames,
+      invitationLink,
+    })
+  )
+}
+
+export async function renderWorkspaceAddedEmail(
+  inviterName: string,
+  workspaceName: string,
+  workspaceLink: string
+): Promise<string> {
+  return await render(
+    WorkspaceAddedEmail({
+      inviterName,
+      workspaceName,
+      workspaceLink,
+    })
+  )
+}
+
+export async function renderPaymentFailedEmail(params: {
+  userName?: string
+  amountDue: number
+  lastFourDigits?: string
+  billingPortalUrl: string
+  failureReason?: string
+}): Promise<string> {
+  return await render(
+    PaymentFailedEmail({
+      userName: params.userName,
+      amountDue: params.amountDue,
+      lastFourDigits: params.lastFourDigits,
+      billingPortalUrl: params.billingPortalUrl,
+      failureReason: params.failureReason,
+    })
+  )
+}

apps/sim/components/emails/subjects.ts

@@ -0,0 +1,91 @@
+import { UPGRADE_REASON_COPY, type UpgradeReason } from '@/lib/billing/upgrade-reasons'
+import { getBrandConfig } from '@/ee/whitelabeling'
+
+/** Email subject type for all supported email templates */
+export type EmailSubjectType =
+  | 'sign-in'
+  | 'email-verification'
+  | 'change-email'
+  | 'forget-password'
+  | 'reset-password'
+  | 'existing-account'
+  | 'invitation'
+  | 'batch-invitation'
+  | 'workspace-added'
+  | 'help-confirmation'
+  | 'enterprise-subscription'
+  | 'usage-threshold'
+  | 'free-tier-upgrade'
+  | 'plan-welcome-pro'
+  | 'plan-welcome-team'
+  | 'credit-purchase'
+  | 'abandoned-checkout'
+  | 'free-tier-exhausted'
+  | 'onboarding-followup'
+  | 'welcome'
+
+/**
+ * Returns the email subject line for a given email type.
+ * @param type - The type of email being sent
+ * @returns The subject line for the email
+ */
+export function getEmailSubject(type: EmailSubjectType): string {
+  const brandName = getBrandConfig().name
+
+  switch (type) {
+    case 'sign-in':
+      return `Sign in to ${brandName}`
+    case 'email-verification':
+      return `Verify your email for ${brandName}`
+    case 'change-email':
+      return `Verify your new email for ${brandName}`
+    case 'forget-password':
+      return `Reset your ${brandName} password`
+    case 'reset-password':
+      return `Reset your ${brandName} password`
+    case 'existing-account':
+      return `Sign-up attempt with your ${brandName} email`
+    case 'invitation':
+      return `You've been invited to join a team on ${brandName}`
+    case 'batch-invitation':
+      return `You've been invited to join a team and workspaces on ${brandName}`
+    case 'workspace-added':
+      return `You've been added to a workspace on ${brandName}`
+    case 'help-confirmation':
+      return 'Your request has been received'
+    case 'enterprise-subscription':
+      return `Your Enterprise Plan is now active on ${brandName}`
+    case 'usage-threshold':
+      return `You're nearing your monthly budget on ${brandName}`
+    case 'free-tier-upgrade':
+      return `You're at 80% of your free credits on ${brandName}`
+    case 'plan-welcome-pro':
+      return `Your Pro plan is now active on ${brandName}`
+    case 'plan-welcome-team':
+      return `Your Team plan is now active on ${brandName}`
+    case 'credit-purchase':
+      return `Credits added to your ${brandName} account`
+    case 'abandoned-checkout':
+      return `Quick question`
+    case 'free-tier-exhausted':
+      return `You've run out of free credits on ${brandName}`
+    case 'onboarding-followup':
+      return `Quick question about ${brandName}`
+    case 'welcome':
+      return `Welcome to ${brandName}`
+    default:
+      return brandName
+  }
+}
+
+/**
+ * Subject line for a per-category usage-limit email. Reuses the shared
+ * {@link UPGRADE_REASON_COPY} so the subject matches the email body and the
+ * upgrade-page header the user lands on.
+ */
+export function getLimitEmailSubject(reason: UpgradeReason, kind: 'warning' | 'reached'): string {
+  const brandName = getBrandConfig().name
+  const copy = UPGRADE_REASON_COPY[reason]
+  const subject = kind === 'reached' ? copy.reachedSubject : copy.warningSubject
+  return `${subject} on ${brandName}`
+}

apps/sim/components/emails/support/help-confirmation-email.tsx

@@ -0,0 +1,61 @@
+import { Text } from '@react-email/components'
+import { format } from 'date-fns'
+import { baseStyles } from '@/components/emails/_styles'
+import { EmailLayout } from '@/components/emails/components'
+
+interface HelpConfirmationEmailProps {
+  type?: 'bug' | 'feedback' | 'feature_request' | 'other'
+  attachmentCount?: number
+  submittedDate?: Date
+}
+
+const getTypeLabel = (type: string) => {
+  switch (type) {
+    case 'bug':
+      return 'Bug Report'
+    case 'feedback':
+      return 'Feedback'
+    case 'feature_request':
+      return 'Feature Request'
+    case 'other':
+      return 'General Inquiry'
+    default:
+      return 'Request'
+  }
+}
+
+export function HelpConfirmationEmail({
+  type = 'other',
+  attachmentCount = 0,
+  submittedDate = new Date(),
+}: HelpConfirmationEmailProps) {
+  const typeLabel = getTypeLabel(type)
+
+  return (
+    <EmailLayout
+      preview={`Your ${typeLabel.toLowerCase()} has been received`}
+      showUnsubscribe={false}
+    >
+      <Text style={baseStyles.paragraph}>Hello,</Text>
+      <Text style={baseStyles.paragraph}>
+        We've received your <strong>{typeLabel.toLowerCase()}</strong> and will get back to you
+        shortly.
+      </Text>
+
+      {attachmentCount > 0 && (
+        <Text style={baseStyles.paragraph}>
+          {attachmentCount} image{attachmentCount > 1 ? 's' : ''} attached.
+        </Text>
+      )}
+
+      {/* Divider */}
+      <div style={baseStyles.divider} />
+
+      <Text style={{ ...baseStyles.footerText, textAlign: 'left' }}>
+        Submitted on {format(submittedDate, 'MMMM do, yyyy')}.
+      </Text>
+    </EmailLayout>
+  )
+}
+
+export default HelpConfirmationEmail

apps/sim/components/emails/support/index.ts

@@ -0,0 +1 @@
+export { HelpConfirmationEmail } from './help-confirmation-email'