Mailing Services

Here to help you with all of your mailing needs, both on and off campus.

Contact Mailing Services at 509-335-2365 or

Not only does WSU Mailing Services provide an interdepartmental mail system to move your correspondence around the Pullman campus, you also have convenient options to get your mail around the state, country, and world, whether it’s one package or a whole marketing campaign.

Mailing on and off campus

Find out what you need to be able to mail anywhere, whether you’re using interdepartmental mail or USPS.

WSU 4-digit delivery codes

Use our complete list of 4-digit delivery codes for addressing interdepartmental mail on the Pullman campus.

Student mail services

Need to track a package or find out how to address mail for residence halls? We have you covered.

Track your package

Look up the delivery status for packages you’re expecting on the Pullman campus.