I love the idea of the X tag with DKIM to set an expiration date after which the signature should no longer be considered valid. (As described here, and many other places: https://xnnd.com/dqio ). But who actually has implemented this, if anyone? Are you aware of any ISPs, ESPs, automation platforms, anyone, who has done so? I'm not finding much.
If you've got any evidence of x= in the wild that you care to share, thank you kindly in advance! Cheers, Al Iverson -- Al Iverson // 312-725-0130 // Chicago http://www.spamresource.com // Deliverability http://www.aliverson.com // All about me https://xnnd.com/calendar // Book my calendar _______________________________________________ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
