Post forwarding (Mannheim)

Dear Mannheimers,

I am a recent alumnus of Mannheim Business School and have been living in Mannheim for over an year. I plan to move to Frankfurt in a couple of weeks. I heard from somebody that it is possible to forward all the mail-posts to a new address for 2 months, from Deutsche post.

Does anyone have any details as to what documents are required and how the process is?

Much appreciate your help!
Abhinav