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Postal Encyclopedia

Seed List

Monitoring addresses

Addressing & ListsUpdated 2026-07-24

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

Definition reviewed 2026-07-24. This is a plain-English Plavidian reference; for USPS terms, the Domestic Mail Manual is the authority. For your own job, the final mail class, postage, and preparation are confirmed after list processing and production review.

Related terms in Addressing & Lists

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Ask Plavidian Expert for an answer based on the USPS Domestic Mail Manual, or send us the job and we'll confirm the preparation before you print.

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