mailsecurity.io vs One.com

One.com is used by more websites in our catalog: 131 use mailsecurity.io and 770 use One.com.

One.com sites have the higher median Ahrefs Domain Rating (mailsecurity.io: 13, One.com: 22).

Between 2026-06 and 2026-07, mailsecurity.io went from 0.02% to 0.01% of all tracked sites, while One.com went from 0.10% to 0.09%. mailsecurity.io is gaining ground faster in our index.

No. A site runs a single email host, so mailsecurity.io and One.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.