Obtaining a Mailer ID from the USPS

Learn how to obtain a Mailer ID from the USPS to be used with Connect+ Series/SendPro P-Series meters, SendPro C400, SendSuite Live, SendSuite Xpress, Ascent, PBFirst, PlanetPress, ConnectRight Mailer, and AddressRight Pro.
Products affected: Connect+® 500W, Connect+® 1000, Connect+® 2000, Connect+® 3000, SendPro™ P1000, SendPro™ P1500, SendPro™ P2000, SendPro™ P3000, SendPro® C400, SendSuite® Live, SendSuite® Xpress, Ascent™, PBFirst™, PlanetPress®, ConnectRight™ Mailer, AddressRight® Pro
A mailer ID is a 9-digit number that is required when using Electronic Return Receipt (ERR). To get a mailer ID, you must submit Form 5053, Bulk Proof of Delivery to the USPS.

To learn about how to obtain a Mailer ID from the USPS, visit the USPS Business Customer Gateway Mailer ID page. This page explains the the Mailer ID Service and how to apply for a Mailer ID.

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UPDATED: August 14, 2021

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