Who reads your email ?
▻https://www.netmeister.org/blog/mx-diversity.html
In summary, some of the information were we able to pull out of our MX data collection includes:
– 58% of all domains (119 million) have no MX record (42 million of those have no IP)
– 1% of all domains (~2 million) use a RFC7505 “Null MX” (0 .)
– 0.7% of all domains (~1.5 million) use localhost
– 40% of all domains (81 million) have an MX record, yielding around 30 million unique records in 21 million unique domains
– 98% of those are unique, and around 380K mail servers a used by more than one domain
– ~2,000 mail servers are used by >1,000 domains each; the most frequently used MX records are GoDaddy’s mailstore1.secureserver.net. and smtp.secureserver.net. (used by 10.6 million domains each) and Google’s aspmx.l.google.com. (used by 9.6 million domains)
– 34% of all domains (53.7 million) use one of Google’s mail servers, 14% (22.5 million) one of GoDaddy’s, 13.5% (~21.3 million) one of Namecheap’s
– for the Top 1M domains, over 60% use Google’s (41%) and Microsoft’s (20%) mail servers
– many mail protection services dominate the remainder
