Add Email Account in Thunderbird – Functional Mailbox

— IM 17.04.2025

1		Add account under Account Settings
2		Login name of the functional mailbox Enter the following values for the incoming mail server Hostname: outlook.office365.com Port: 993 Connection Security: SSL/TLS Authentication Method: OAUTH2 Username: funktionspostfach@oth-regensburg.de Enter the following values for the outgoing mail server Hostname: smtp.office365.com Port: 587 Connection Security: STARTTLS Authentication Method: OAUTH2 Username: funktionspostfach@oth-regensburg.de
3		Your login name
4		Click Finish
5		Mailbox is now integrated