Fastmail vs zendesk.com

Fastmail is used by more websites in our catalog: 1,580 use Fastmail and 287 use zendesk.com.

zendesk.com sites have the higher median Ahrefs Domain Rating (Fastmail: 38, zendesk.com: 79).

Between 2026-06 and 2026-07, Fastmail went from 0.22% to 0.18% of all tracked sites, while zendesk.com went from 0.05% to 0.03%. zendesk.com is gaining ground faster in our index.

No. A site runs a single email host, so Fastmail and zendesk.com 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.