Prerequisites
- A Microsoft account with Outlook mail/calendar access.
- Permission to authorize the Outlook/Microsoft OAuth app.
How to connect
1
Open the Connectors panel
In chat, click the + next to the message box and select Connectors.
You can also manage connectors while editing an agent in Agent Studio.

2
Find Outlook and click Connect
Under Apps, locate Outlook and click Connect to start authentication.

3
Authorize access
Sign in with the account you want to use and review the requested permissions before confirming.
4
Confirm it is active
Back in Tess, Outlook should appear under Connected, ready for chats and agents.

What you can do
- Search and summarize emails from the connected mailbox
- Draft and send messages when send permissions are available
- Check calendar availability and upcoming events
- Support inbox triage with priorities and suggested replies
- Keep Microsoft productivity work inside Tess
Example prompts
- Find unread emails from Contoso about renewal and summarize next steps.
- What does my Outlook calendar look like tomorrow morning?
- Draft a reply to the latest email from Ana about the proposal and show it before sending.
- List meetings this week that conflict with a 1-hour focus block.
Best practices
- Say whether you mean mail, calendar, or both.
- Ask for a draft before sending external emails.
- In agents, define the Outlook role clearly (triage, scheduling, or both).
Troubleshooting
Admin consent required
Admin consent required
Some Microsoft tenants require an admin to approve the app before users can connect.
401 / connection dropped
401 / connection dropped
Reconnect Outlook in Connectors after password, MFA, or policy changes.
Mailbox or calendar missing data
Mailbox or calendar missing data
Confirm the connected account can access that mailbox/calendar in Outlook.
Tess uses the permissions of the connected account. It does not expand access beyond what that account can already do.Connectors involve access to external systems. Only connect accounts that fit the usage context, and review permissions carefully.