Attio + Outlook Integration
Connect Outlook or Microsoft 365 to Attio so email threads and calendar meetings log themselves against the matching record, without anyone forwarding a thread by hand.
What Does This Integration Do?
Outlook holds the conversation history; Attio holds the record. Without a sync, that history only reaches the record when a rep remembers to forward it, and it never reaches Attio at all from a colleague's inbox.
This integration subscribes to Microsoft Graph change notifications for mail and calendar, then logs matching activity against the person or company record in Attio using the sender or attendee address as the match key.
What Syncs, and Which Way
Most Outlook + Attio projects sync the same core objects. We adjust matching rules and folder/category mapping to fit your existing Attio setup.
Sent & Received Email
Outlook → Attio
Threads logged on the matching person or company record
Calendar Meetings
Outlook → Attio
Meetings and attendees logged against the record automatically
New Senders
Outlook → Attio
Unrecognized senders optionally create a new person record
Contact Details
Attio → Outlook
Name and title kept current in the shared address book, where used
Categories & Folders
Outlook → Attio
Outlook categories mapped to Attio status or list membership
Bounces & Out-of-Office
Outlook → Attio
Delivery failures flagged on the record automatically
How We Build It
Microsoft Graph exposes webhook-style change notifications for mail and calendar, plus a REST API for reads, writes, and backfills. Attio's API handles the write side.
| Approach | What it is | Best for | Watch out for |
|---|---|---|---|
| Microsoft Graph webhooks | Change notifications pushed when mail or calendar events change | Logging activity the moment it happens | Subscriptions expire and need scheduled renewal |
| Microsoft Graph API (pull) | On-demand reads of messages, events, and mailbox folders | Backfills and lower-volume mailboxes | Higher latency than webhook notifications |
| Attio REST API | Records, notes, and list-entry endpoints secured with an API key or OAuth | Writing logged activity onto records | Rate limits on very high email volume |
| Azure AD app + admin consent | Application permissions granted once at the tenant level | Company-wide rollout without per-user consent | Requires Microsoft 365 admin approval up front |
Where a template usually falls short: a shared mailbox, a delegate sending on someone else's behalf, or a contact with an alias domain will confuse a naive email-match rule. Getting that matching logic right is most of the build.
How Much Does It Cost?
An Attio + Outlook integration typically costs between $2,000 and $7,000 to implement, depending on tenant size, matching complexity, and whether Calendar is included.
| Approach | Implementation | Ongoing |
|---|---|---|
| Single mailbox, basic logging | $2,000 – $3,200 | Support retainer only |
| Team-wide mail + record matching | $3,200 – $5,500 | Support retainer only |
| Full tenant rollout with Calendar & auto-create rules | $5,500 – $7,000+ | Support retainer only, no platform fee |
The number moves most on tenant-wide vs. single-mailbox scope, whether new senders should auto-create records, and whether calendar meetings are in scope. We quote a fixed price after a scoping call.
How Long Does It Take?
The biggest schedule risk is Microsoft 365 admin approval for tenant-wide permissions — we flag that requirement in the first call so it doesn't stall the build.
Single mailbox logging
One connected Outlook account, existing-record matching only.
Tenant-wide rollout
Multiple mailboxes, Calendar sync, and auto-create rules for new contacts.
What Does Our Integration Process Look Like?
Every engagement follows the same five stages — you get a fixed-price scope and a mapping sheet you sign off before we build.
Discover
We review your Attio workspace, objects, and your Outlook account setup.
Map
We document every event, direction, field mapping, and error rule before building.
Build
We implement against an Attio sandbox workspace and Outlook's test/sandbox environment.
Test
We run real-world scenarios end to end before touching production data.
Support
We monitor after go-live, with alerting, logging, and a named contact.
Frequently Asked Questions
A Microsoft Graph webhook subscription pushes mail and calendar change notifications to a listener, which logs the activity against the matching Attio record over the Attio REST API.
It works best with Microsoft 365 / Exchange Online, since Graph is the cloud API. On-prem Exchange can be supported with EWS, though it's a different build.
That's configurable. New senders can be ignored, flagged for review, or automatically create a new person record depending on the rule you choose.
Yes. An Azure AD app with admin consent can watch every mailbox in the tenant without each person granting access individually.
Most projects run $2,000 to $7,000 depending on tenant size and scope. See the cost table above for a full breakdown.
Yes. Loose email-matching rules across shared mailboxes and delegates are the most common cause of duplicate records, and cleaning that up is a regular job for us.
Ready to Connect Outlook to Attio?
Every meeting and email logged by hand is a gap in the record the next person has to fill in from memory. A scoped integration removes that work permanently — and you'll know the exact cost before we start.