DMM TOC > 100 Retail Letters, Cards, Flats, and Parcels > 170 Media Mail|
1.1 Payment Method
The mailer is responsible for proper postage payment. Subject to the corresponding standards, postage for Media Mail and Library Mail may be paid by any method (see 604) except precanceled stamps.
In a postage-affixed single-piece mailing, the mailer must apply enough value in adhesive stamps or meter stamps equal to the postage required.
A mailer may mail material without affixing postage when payment is made at the time of mailing from a permit imprint advance deposit account established with the USPS for that purpose. This payment method may be used for postage and extra service fees, but not for any mailpiece that is designed for reply mail purposes. See 604.5.0 for indicia options.
2.2 Minimum Quantity
Permit imprint mailings must contain at least 200 pieces or 50 pounds, except for single-piece mailings submitted under the terms of an approved manifest mailing system agreement with a minimum volume reduction provision (see 705.2.0).