Mail prepared by the USPS carrier route that delivers it. Carrier-route preparation can qualify for lower postage when density and preparation rules are met. Each route qualifies on its own, so one mailing commonly contains routes at several price levels at once.
Carrier Route
Updated 2026-07-24
Route-level sort
Sortation & Entry
Definition reviewed 2026-07-24. Plavidian reference, written from the USPS Domestic Mail Manual. Final mail classification, postage, and preparation are confirmed after list processing and production review.
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Ask Plavidian™ for an answer grounded in the USPS Domestic Mail Manual, or send us the job and we will confirm the preparation before you print.