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Sender IDSender ID

Sender ID Usage Statistics · Download List of All Websites using Sender ID

Sender ID is an anti-spoofing email framework heavily based on SPF.

Standard

SPFSPF

SPF Usage Statistics · Download List of All Websites using SPF

The Sender Policy Framework is an open standard specifying a technical method to prevent sender address forgery.

Standard

DMARCDMARC

DMARC Usage Statistics · Download List of All Websites using DMARC

A technical specification created by a group of organizations that want to help reduce the potential for email-based abuse

Standard