# Gmail & Outlook integration with IntuBu

Status: **Available now** · Category: Collaboration & Chat · Canonical: https://intubu.intuitivecapital-dai.com/integrations/gmail-outlook

Email send, receive and threading onto customer records.

## How it works

Connect a mailbox under Email & Calendar → Connect accounts. Gmail and Google Workspace use the Gmail API and Outlook / Microsoft 365 uses Microsoft Graph, each through OAuth 2 with PKCE against an OAuth application your organisation registers with Google or Microsoft; other providers, or a mailbox without OAuth, use IMAP or POP3 and SMTP with an app password. Gmail syncs by history id (falling back to a full re-list when Google expires it) and Graph by delta link, so a re-sync never duplicates; every message is de-duplicated on Message-ID and matched to a customer or CRM contact by address, and a thread can be re-matched or linked by hand to a customer, opportunity or case. Mail sent from IntuBu leaves through the same mailbox. Google and Microsoft calendars sync the same way.

## Why it matters

Customer conversations about an invoice belong next to the invoice. Reading the mailbox through the provider's own API, rather than a forwarding rule, is what keeps both sides of the thread.

## What moves

- message
- thread
- attachment
- calendar_event