Sogo Repack - Tuhh Webmail Contact the TUHH Regionales Rechenzentrum (RRZ) – but check the webmail help page first. Do you use the SOGo app, or do you forward all your TUHH mail to a personal address? Let us know in the comments below! If you are a student or employee at the Hamburg University of Technology (TUHH), you might have heard the term "SOGo" thrown around when people talk about email. Unlike standard Gmail or Outlook, TUHH runs its own centralized communication platform. tuhh webmail sogo