{{tag>mail thunderbird outlook}} ====== 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: smtp.office365.com Port: 587 Authentication method: OAuth2 Connection Security: STARTTLS __Incoming server__ Server name: outlook.office365.com 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 ====== ====== References ======