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mailing lists

Authentication

ARC (RFC 8617): Authenticated Received Chain Explained (2026)

Alaa 27 August 2026

ARC (Authenticated Received Chain, RFC 8617) lets mailing lists, forwarders and gateways preserve authentication results when they modify messages in ways that would otherwise break DMARC. This guide ...

RFCs

RFC 2369: The Use of URLs as Meta-Syntax for Core Mail List Commands

Alaa 22 July 2026

Defines List-Unsubscribe, List-Help, List-Post and other headers for automating mailing list management.

RFCs

RFC 2919: List-Id: A Structured Field and Namespace for the Identification of Mailing Lists

Alaa 22 July 2026

Defines the List-Id header for uniquely identifying mailing lists, used by email clients to organise list mail.