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# Integrations Hub
First-class connectors that pull data from external sources into cognee memory.
Every connector here is built on cognee's **DLT ingestion subsystem**, so they
all share the same guarantees instead of each reinventing ingestion:
- **One call to ingest** — pass the connector's source to `cognee.remember(...)`.
- **Incremental re-sync** — `write_disposition="merge"` upserts by primary key;
re-running only pulls the delta.
- **Forget-on-source-deletion** — records deleted upstream are removed from the
graph + vector + relational stores via the shared `orphan_cleanup` path.
- **Optional, lazy dependencies** — install just the extra you need.
## Available connectors
| Source | Extra | Factory | Example | Notes |
|---|---|---|---|---|
| **Gmail** | `cognee[gmail]` | `cognee.tasks.ingestion.connectors.gmail_source` | [`demos/gmail_connector_example.py`](../demos/gmail_connector_example.py) | Messages/threads, label & query scoped. Incremental via `historyId`; trashed/deleted mail forgotten on next sync. OAuth2 (read-only). |
## Gmail quickstart
```bash
pip install "cognee[gmail]" # or: uv sync --extra gmail
```
```python
import cognee
from cognee.tasks.ingestion.connectors import gmail_source
await cognee.remember(
gmail_source(label_ids=["INBOX"], credentials_path="credentials.json"),
dataset_name="gmail_inbox",
primary_key="id",
write_disposition="merge",
max_rows_per_table=0, # 0 = no read cap, so forget-on-delete sees the whole inbox
)
answer = await cognee.search(
query_text="What did my manager ask me to do this week?",
datasets=["gmail_inbox"],
)
```
See the [example](../demos/gmail_connector_example.py) for OAuth setup,
incremental re-sync, and the privacy / opt-in notes.
## Adding a new connector
1. Create `cognee/tasks/ingestion/connectors/<source>.py` exposing a factory
that returns a `dlt` resource/source (`primary_key`, `write_disposition="merge"`,
and a `hard_delete` marker column for deletions). Keep the SDK import lazy.
2. Add a matching optional-dependency extra in `pyproject.toml`.
3. Add a runnable example under `examples/demos/` and a row to the table above.
4. Add mocked-SaaS + mocked-LLM tests (no live credentials in CI).