====== Add Email Account in Thunderbird – Functional Mailbox ====== --- //[[support@oth-regensburg.de|IM]] 17.04.2025 // |**1**|{{:public:email:exchangeonline:thunderefk_1.png?600|}}|**Add account under Account Settings**| |**2**|{{:public:email:exchangeonline:thunderefk_2.png?600|}}|**Username of the functional mailbox** \\ **For the incoming mail server, enter the following values** \\ **Hostname**: outlook.office365.com\\ **Port**: 993\\ **Connection Security**: SSL/TLS\\ **Authentication Method**: OAUTH2\\ **Username**: funktionspostfach@oth-regensburg.de \\ \\ **For the outgoing mail server, enter the following values** \\ **Hostname**: smtp.office365.com\\ **Port**: 587\\ **Connection Security**: STARTTLS\\ **Authentication Method**: OAUTH2\\ **Username**: funktionspostfach@oth-regensburg.de | |**3**|{{:public:email:exchangeonline:thunderefk_3.png?600|}}|**Your login username**| |**4**|{{:public:email:exchangeonline:thunderefk_4.png?600|}}|**Click Finish**| |**5**|{{:public:email:exchangeonline:thunderefk_5.png?600|}}|**Mailbox is now integrated**|