Mail Provider Market Share: Google and Microsoft Route 54% of the World's Email
We mapped the MX records of 1,051,461 domains with an identified mail provider across LLMSE's index. Google Workspace (28.4%) and Microsoft 365 (26.0%) still form a duopoly, but it has loosened to 54.4% as the crawl broadened. IONOS is now the third-largest provider, bundled hosting email has grown to a quarter of all domains, and ProtonMail has overtaken Fastmail as the privacy leader.