DKIM Usage Statistics · Download List of All Websites using DKIM
DomainKeys Identified Mail provides a method for validating a domain name identity that is associated with a message through cryptographic authentication.
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.
Last technology detected on 10th August 2025. We know of 2 technologies on this page and 93 technologies removed from puzzlebox.io since 14th July 2014. Link to this page.
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