RFC 2919 · PROPOSED STANDARD · 2001

List-Id: A Structured Field and Namespace for the Identification of Mailing Lists

Overview

RFC 2919, “List-Id: A Structured Field and Namespace for the Identification of Mailing Lists”, is a Proposed Standard document published in March 2001 by R. Chandhok, G. Wenger. The canonical text is published by the RFC Editor.

Abstract

Software that handles electronic mailing list messages (servers and user agents) needs a way to reliably identify messages that belong to a particular mailing list. With the advent of list management headers, it has become even more important to provide a unique identifier for a mailing list regardless of the particular host that serves as the list processor at any given time. [STANDARDS-TRACK]

Abstract as published in the RFC, via rfc-editor.org.

What “Proposed Standard” means

An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.

Read this RFC

The canonical text of RFC 2919 is hosted at rfc-editor.org. Available in TXT,HTML.

Other RFCs from 2001

Who Is Online

In total there are 69 users online: 0 registered, 64 guests and 5 bots.

Most users ever online was 1,226 on 13 Jun 2026, 3:56 am.

Bots: Applebot Facebook Majestic Other Bot SemrushBot

Users active in the past 15 minutes. Total registered members: 354