One.com vs Rackspace Email

Rackspace Email is used by more websites in our catalog: 770 use One.com and 7,491 use Rackspace Email.

One.com sites have the higher median Ahrefs Domain Rating (One.com: 22, Rackspace Email: 21).

Between 2026-06 and 2026-07, One.com went from 0.10% to 0.09% of all tracked sites, while Rackspace Email went from 0.88% to 0.85%. One.com is gaining ground faster in our index.

No. A site runs a single email host, so One.com and Rackspace Email 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.