Please note that setting up a Hosted Exchange mailbox in Thunderbird is only possible via IMAP. Calendar and contact synchronization is therefore disabled.
We recommend using Outlook (Classic) as an alternative.
1 - Open Thunderbird
Launch the Thunderbird application.
2 - Enter username and password
Enter the username and password of your Split Setup Exchange mailbox.
Please note that setting up a Split Setup Exchange mailbox is only possible with a username in the following format:
Logging in with your email address is not possible!
Click "Configure manually".
3 - Server Settings
Please complete/change the information entered. The following information is required to set up your Hosted Exchange Split Setup mailbox via IMAP in Thunderbird:
Protocol: IMAP
IMAP incoming server / Hostname: at.exchangeserver.online
Port: 993
Connection security: SSL/TLS
Authentication method: Normal password
Username: Your username
SMTP outgoing server / Hostname: at.exchangeserver.online
Port: 587
Connection security: STARTTLS
Authentication method: Normal password
Username: Your username
Next, click "Done".
Wait until Thunderbird has set up your mailbox and click "Finish".
4 - Edit sending address
To be able to send, you need to edit the existing sending address. To do this, click "Account Settings" in your mailbox.
Click on the account name in the menu on the left and then under "Default Identity" change the email address to your email address in the format [email protected]
You can now access your emails.