This term was previously called “Nonprofit Bulk Mail”, which is a subclass of Standard Mail available only to qualified organizations specified by U.S. statute.  Requirements for nonprofit bulk mail:

•  must consist of at least 200 or more identical pieces;
•  all pieces must be uniform in size;
•  all pieces must be mailed out at the same time;
•  each piece must weigh less than 16 ounces and be at least .007” thick (Mail pieces   over 4 1/4” by 6” in size must be at least .009” thick.); and
•  mail pieces must be presented to Mail Operations in ascending ZIP Code order.

In order to qualify for nonprofit rates, you must complete the Form for Accepting Non Profit (Bulk) Mailings and submit it to the mail center prior to pick up.

Note: The Mail Center provides tubs and trays for bulk mailings. Please call 747-3268 for for more information.

Prior to preparing a large non-profit mailing, be sure to contact Mail Center Operations, at 747-3268, to verify mail piece formats for compliance with USPS regulations.