Gmail & Calendar - DuckBrain

Status: Planned The SaaS lane (Lane B): provider-native exports for backfill, platform-proxied APIs for incremental sync.

Backfill: Google Takeout mbox parsed locally — free, offline, full fidelity. Never an API crawl.
Incremental: Gmail history.list deltas through Pipedream Connect or Composio behind one SaasConnector interface (proxy-first; credentials never touch DuckBrain).

Choice rule: Pipedream (custom OAuth client) when exportable tokens matter; Composio for toolkit breadth and MCP-native agent parity. Both can share one consent via Composio’s bearer-token import.