Self-hosted email is in steep decline, Microsoft and Google are taking over
Oh great, Big Tech is now in prime position to decide which messages get through
The number of large users hosting their own email servers has halved in the last decade, according to Artem Berezin, a researcher who works at business e-mail company Live Direct Marketing.
On the Internet Society blog, Berezin explained that DNS records reveal a lot about email.
“The MX record says where the mailbox lives. The SPF record says who may send on the domain's behalf. The DMARC record says what should happen when a message fails authentication,” he wrote.
Berezin says he analyzes those records using daily forward-DNS snapshots captured by the OpenINTEL project run by the University of Twente, SURFnet and SIDN Labs. He also consults the Tranco project’sassessment of the most popular domains to determine the million most popular domains, then “classifies each domain's MX hostname and SPF includes against open dictionaries...
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