Closing a mailbox does not close your obligations. When a customer terminates, USPS expects the date recorded, the Form 1583 retained for six months, and, the part almost nobody budgets for, their mail remailed for six months at your counter. Here is the full post-termination lifecycle from DMM 508.1.8.4.
As soon as practical after a customer ends service, write the termination date on the retained copy of their Form 1583 and enter it in the CRD. This is not optional bookkeeping: your quarterly certification specifically attests that every prior-quarter closure is recorded. A termination handled at the counter but never entered in the database turns into a false attestation at the next deadline.
Retain the endorsed Form 1583 copy for at least six months after the termination date. A digital copy satisfies the requirement. This window exists so USPS can still tie mail moving through the system back to an authorization, even after the box has closed. Purging customer records on cancellation day is a compliance violation dressed up as good data hygiene.
The rule that catches operators off guard: for at least six months after termination, the CMRA must remail the former customer's mail to them. Practical consequences:
Once the remail period ends, the obligation narrows. The CMRA may return mail to the Post Office, but only these classes: First-Class Mail, USPS Ground Advantage retail pieces, Priority Mail, Priority Mail Express, and accountable mail. Other mail is not returnable through that channel, so most stores simply let the trickle die out while returning what qualifies.
Because the six-month duties are non-negotiable, the leverage is all in how you offboard. A closure process worth copying: collect the forwarding address and remail terms before the final day, record the termination in the CRD the same week, calendar the six-month retention and remail windows, and only then archive the account. Stores that improvise this per-customer are the ones that discover the remail rule from a deficiency notice.
USPS updates its requirements periodically. These official references are the source of truth; this page was last verified against them on July 10, 2026.
Terminations open their CRD task on their own, retention windows are tracked against the six-month rule, and nothing gets purged before USPS allows it.
Innbocks provides software that supports USPS CMRA compliance workflows, including Form 1583 collection, e-notarization, and CRD task tracking. Innbocks is not affiliated with the U.S. Postal Service and does not provide legal advice. The operator of each CMRA remains responsible for satisfying USPS requirements, including those in Domestic Mail Manual 508.1.8. Always verify current rules against official USPS sources.