Accumulate "deleted" emails in the folder, which still count against your storage limit.

In mail clients like Thunderbird, you can choose to only download headers or specific folders rather than the entire mailbox, which saves local and server space.

Instead of keeping all emails on the server, move older messages to a Local Folder within a desktop client like Mozilla Thunderbird. This removes them from the TUHH server while keeping them accessible on your computer.

Ensure all your devices use the same Sent folder (usually named "Sent") to prevent duplicate folders from cluttering your account. 4. Accessing TUHH SOGo services

Outgoing messages with large attachments often take up significant space. Delete unnecessary old sent items.

To avoid the "mailbox full" error in the future, consider these strategies:

Right-click the Trash folder and select Empty Trash to permanently delete items.

Accessible via IMAP on various supported software clients .

Sort your emails by size to find and remove the largest files. 3. Long-term storage solutions

The SOGo platform is more than just webmail; it acts as a groupware server for several services: