emailservice.co vs Fastmail

Fastmail is used by more websites in our catalog: 200 use emailservice.co and 1,580 use Fastmail.

Fastmail sites have the higher median Ahrefs Domain Rating (emailservice.co: 28, Fastmail: 38).

Between 2026-06 and 2026-07, emailservice.co went from 0.02% to 0.02% of all tracked sites, while Fastmail went from 0.22% to 0.18%. emailservice.co is gaining ground faster in our index.

No. A site runs a single email host, so emailservice.co 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.