A couple of days ago I sent a single message to a reasonably large mailing list (spf-help, email oriented - so likely not representative, but it's a data point). Since I am a list owner, I know how many subscribers there are and from my DMARC feedback, I know how many times that single message got reported.
43% of them showed up in my DMARC feedback, so that's at least one data point on breadth of coverage for DMARC feedback. To do this (at least the way I did it), you need to send a single message in a reporting period to an email list that does not re-write from and for which you know how many subscribers there are. I'm curious what kind of numbers other might be able to come up with. Scott K _______________________________________________ dmarc mailing list [email protected] https://www.ietf.org/mailman/listinfo/dmarc
