This would seem to be a simple thing to find but all searches turn up are vague blog posts (symptom of general internet decline but... whatev).<p>Anyone have something with numbers on this topic bookmarked somewhere? Or that they can share from internal studies at larger email providers?
No numbers, but anecdotally we turned off DKIM. Telling end users we are rejecting their otherwise email because they don’t have DKIM implemented. SPF and DMARC compliance got better over time but DKIM compliance just never did get better.