Home > About USPS & News > Forms & Publications > Postal Periodicals and Publications > Publications > Publication 401 - Guide to Manifest Mailing System > 1 Manifest Mailing—The Basics > 1-5 Exceptions to the Minimum Volume Requirements
1-5.1 Some types of presorted mailings may require different piece or weight minimums (such as 500 pieces for a Presorted First-Class Mail® mailing).
1-5.2 Qualified manifest mailers may submit less than minimum volumes for a specified period of time. (See 11-1 for more details.)
1-5.3 Less than minimum volumes may be accepted occasionally from mailers who usually meet minimums. Typically, this is caused by an infrequent low-volume day or production problem.
1-5.4 A Registered Mail™ or registered collect on delivery (COD) manifest mailing, which by standard requires a separate manifest listing, may contain fewer than 200 pieces or 50 pounds of mail if presented at the same time with another manifest mailing that meets the minimum volume requirements.
1-5.5 One single-piece rate manifest mailing presented with a manifested presort rate mailing that meets the required minimum volume standards is not required to meet an additional 200-piece or 50-pound minimum.
1-5.6 Mailings consisting of pieces that weigh less than 1 pound, but are paid for at the single-piece 1-pound rate and have a minimum of 50 pieces, are eligible as a permit imprint manifest mailing.