Variable Envelope Return Path

Variable envelope return path (VERP) is a technique used by some electronic mailing list software to enable automatic detection and removal of undeliverable e-mail addresses. It works by using a different return path (also called "envelope sender") for each recipient of a message.

Read more about Variable Envelope Return Path:  Motivation, How VERP Solves The Bounce Handling Problem, Origin, Example, Software That Supports VERP, Disadvantages

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    —Henry David Thoreau (1817–1862)