MAC Batch is a certification process designed in cooperation with the mailing industry to evaluate USPS® manifest/presort mailing products manufactured by software developers. MAC Batch determines whether the manifest/presort mailing software accurately calculates postage for non-identical piece mailings submitted under the permit imprint payment method in accordance with standards published in the DMM® reference manual and Publication 401, Guide to the Manifest Mailing System. MAC Batch is available only to software companies that develop manifest/presort products for resale or internal use.

Although MAC Batch evaluates and certifies USPS manifest/presort mailing products, the program does not guarantee acceptance of customer mail prepared using MAC Batch-certified software. However, MAC Batch does provide national approval of computer-generated manifest listings, postage statement facsimiles, and other USPS forms required for manifest mailings. Participation in this program is voluntary, and each user is responsible for proper software installation, use, and quality control maintenance.

The MAC Batch Certified Products Listing and MAC Batch Order Form are available on RIBBS.

For more information on MAC Batch certification, call the National Customer Support Center at 800-331-5746.