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Postal Encyclopedia

Seed List

Updated 2026-07-24

Monitoring addresses

Addressing & Lists

Additional addresses included in a mailing so the mailer, client, or campaign can verify delivery and timing.

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.

Related terms in Addressing & Lists

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