emailservice.io vs Fastmail

Fastmail is used by more websites in our catalog: 251 use emailservice.io and 1,580 use Fastmail.

Fastmail sites have the higher median Ahrefs Domain Rating (emailservice.io: 29, Fastmail: 38).

Between 2026-06 and 2026-07, emailservice.io went from 0.03% to 0.03% of all tracked sites, while Fastmail went from 0.22% to 0.18%. emailservice.io is gaining ground faster in our index.

No. A site runs a single email host, so emailservice.io and Fastmail are mutually exclusive.

Adoption is counted from Site Stats Database's own crawl; Domain Rating comes from Ahrefs and traffic from DataForSEO. Figures reflect the sites we track and refresh at least monthly.