Email integrations
Email connectors ingest messages, attachments, folders, and contacts into the workspace graph. The same node model is used by all email connectors so cross-source search works out of the box — a Gmail thread and an Outlook message both end up as _Message nodes.
flowchart LR
Box[(Mailbox)] -->|fetch| C[Connector]
C --> M[_Message]
C --> A[_Attachment as _FileEntry]
C --> F[_Folder per mail folder]
C --> Ct[_Contact]
M -->|FromContact / ToContact| Ct
F -->|HasMessage| M
M -->|HasAttachment| A
Delta sync strategies
Gmail and Outlook (Graph) use modern delta APIs; IMAP / POP3 fall back to message-index tracking, with UIDVALIDITY checks to detect folder rebuilds. All variants persist per-folder cursors so re-runs are cheap.