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Setting up a mailer ID on the SendPro C Lite, SendPro C, SendPro+, SendPro C Auto

Your mailer ID is a 9-digit number that you need when using Electronic Return Receipt (ERR). To get your mailer ID, you need to submit Form 5053, Bulk Proof of Delivery to the USPS.
Products affected: SendPro® C Lite, SendPro® C, SendPro®+, SendPro® C Auto (2H00, 8H00, 9H00)

Your mailer ID is a 9-digit number that you need when using Electronic Return Receipt (ERR). To get your mailer ID, you need to submit Form 5053, Bulk Proof of Delivery to the USPS.

  1. Tap Settings.
    Settings icon
  2. Scroll down to the Envelope Printer Settings section.
  3. Tap Postage Refill.
  4. Tap Mailer ID.
  5. Enter the 9-digit number using the keypad.
  6. Tap Apply.

UPDATED: February 05, 2025