University Communications Mailing Services metering equipment and USPS sorting equipment cannot process black, red, or any other dark colored envelopes and postcards. Postcards with dark pictures on the back side also cannot be processed. If you do use them, they must be stamped by your office. Stamps are available for purchase from University Communications Mailing Services.
For more information contact University Communications at 335-2365, email joyr@wsu.edu, srigby@wsu.edu or visit ucomm.wsu.edu/mailing.