USPS Mailing Compliance Checker
Validate USPS mailing compliance — IMb, Mail.dat, presort, and Move-Update — before the drop.
Drop a document to analyze
or browse to choose a file
PDF · AFP · PCL · PostScript · IPDS · max 25 MB · no signup
FAQ
What does the USPS module check?
IMb encoding integrity, Mail.dat file sanity, presort qualification hints, address-block geometry against the Domestic Mail Manual, and Move-Update timing — with the USPS rule version recorded on every result.
Are the results a guarantee of USPS acceptance?
No. Compliance checks are deterministic and auditable; presort and Move-Update outputs are advisory hints, not a binding USPS ruling — verify before claiming.
Can I lock the rules to a specific USPS publication?
Yes — pin a rule version per workspace so a campaign re-runs against the rules in force at the time, even after USPS publishes an update.