The Mail Services Department is a branch of the Office of the Vice Chancellor, Administration.

Mail Services is a distribution hub for all incoming US mail, intra- and inter-campus mail, and outgoing mail between the UC Berkeley campus and outside postal and delivery systems. It is dedicated to the timely and efficient processing and delivery of internal correspondence, an uninterrupted flow of mail between the campus community and the U.S. Postal Service (USPS) and other outside carriers, and the realization of optimal savings through the utilization of automated procedures and cost-effective mailing techniques.