Log into your Webmail account under "https://webmail.th-ab.de/".
Click on the User Symbol in the upper right corner and select "Weiteres Postfach öffnen..." or "additional mail box..".
Type in the name or adress of the desired mail box and click on it to select it. Approve with clicking on "Öffnen" or "Open".
If you have the permission to the mail box, it will now be added to your account.
Note: If the Error occurs, stating that you are not permitted to this mailbox, please contact the Helpdesk-Team.
Adding Another Mailbox to Webmail
Adding another mailbox to Webmail: