IONOS vs Proofpoint

Proofpoint is used by more websites in our catalog: 7,789 use IONOS and 10,601 use Proofpoint.

Proofpoint sites have the higher median Ahrefs Domain Rating (IONOS: 20, Proofpoint: 60).

Between 2026-06 and 2026-07, IONOS went from 0.97% to 0.88% of all tracked sites, while Proofpoint went from 1.6% to 1.2%. IONOS is gaining ground faster in our index.

No. A site runs a single email host, so IONOS and Proofpoint 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.