Shared and multiple mailboxes
Read your own mailbox, add shared mailboxes, or connect an entire organization with client credentials.
Microsoft Outlook 365
Polytomic connects Microsoft Outlook 365 to your data warehouse, databases, and other tools for ETL. Sync mailbox messages and attachments from a single inbox or your whole organization, without writing code.
Graph rate limit respected
Requests pace themselves under Microsoft Graph's per mailbox limit, well beneath the threshold.
Attachments included
Message attachments sync with a direct link to their content, ready to fetch.
Example workflows
Archive company email into your data warehouse for compliance and search
What you can sync
Mailbox messages and folders sync from Outlook into your data warehouse, databases, or other connected tools.
From Microsoft Outlook 365
Messages with subject, body, and full recipient details
Message attachments with direct content links
Categories, flags, and importance markers
Mail folders including their nested folder hierarchy
Internet message headers and conversation threading
How it works
Connect a Microsoft account with OAuth to read your own mailbox, or use client credentials to read mailboxes across your organization. Polytomic reads messages and their folder structure into your data warehouse, database, or other connected tools.
Incremental syncs read only messages changed since the last run, so ongoing syncs stay fast even in large mailboxes. Requests pace themselves under Microsoft Graph's per mailbox rate limit, so a busy sync will not get throttled.
- Read your own mailbox or add shared mailboxes with OAuth
- Connect with client credentials to read many mailboxes at once
- Sync only messages changed since the last run
- Read message attachments with direct authenticated content links
- Traverse each mailbox's folder hierarchy including nested folders
- Stay under Microsoft Graph's per mailbox rate limit automatically
How to set up
Outlook connects with Microsoft OAuth or with client credentials. OAuth reads the signed in user's mailbox plus any shared mailboxes typed in during setup. Client credentials use an Azure app registration granted admin consent, then a mailbox picker chooses which mailboxes across the organization to read.
How to get connected
- 1In Polytomic, go to Connections, click Add connection, and select Microsoft Outlook 365
- 2Click Connect to Microsoft Outlook 365 and complete the Microsoft OAuth flow
- 3Review the connection name and click Save
Frequently asked questions
Why teams choose Polytomic
No engineering required
Set up and manage syncs without writing code.
Flexible data modeling
Use SQL to define exactly what data gets synced.
Handles scale automatically
Supports large datasets with incremental syncs and bulk APIs.
Start syncing your data with Microsoft Outlook 365 in minutes
No credit card required. Free trial available.