Here is how to quickly resolve the issue and a draft you can use to inform others: How to Fix a Full Mailbox

Mastering TUHH Webmail: Why the SOGO Interface is Your Full-Featured Email Hub

: Identify and remove emails with large attachments (e.g., PDFs, images). For future large transfers, the TUHH Upload Service is recommended over email Technische Universität Hamburg Archive Emails Locally : Use an email client like Mozilla Thunderbird

: Most student accounts have a fixed quota. If you consistently hit the limit even after deleting items, contact the TUHH Service Desk to ask about potential upgrades or server-side archiving. Account Status : Note that SOGo requires an active