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Connect thunderbird with Oulook 365

Enable Authenticated SMTP

In Microsoft 365 admin center go to Active users > select user > Mail tab > Manage email apps.

Thunderbird settings for connecting

Outgoing server

Server name:

Port: 587

Authentication method: OAuth2

Connection Security: STARTTLS

Incoming server

Server name:

Port: 993

Authentication method: OAuth2

Connection Security: SSL/TLS

Tested on

  • Thunderbird 78.8.1
  • Microsoft admin center accessed on 2021.05.25

See also


wiki/connect_thunderbird_oulook_365.txt · Last modified: 2021/05/25 16:58 by antisa

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