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Glossary · Published 2026-09-29 · AgentiSend team

VERP

VERP: An envelope sender on your return-path host that names the message a bounce belongs to.

VERP is the envelope sender we use once your return path records resolve. It is an address on send. of your domain (or the label you chose) that names the message, so a bounce comes back to that send rather than to a shared host.

Until both return-path records resolve, the envelope sender stays the From address. The return-path TXT is what keeps SPF alignment once the envelope moves.

Related terms

  • Return path — The MX and TXT on your domain that receive bounces and keep the envelope aligned.
  • SPF alignment — The envelope domain and the From domain match, or they share one organisation domain.