mailbox.org vs Proofpoint

Proofpoint is used by more websites in our catalog: 133 use mailbox.org and 10,601 use Proofpoint.

Proofpoint sites have the higher median Ahrefs Domain Rating (mailbox.org: 47, Proofpoint: 60).

Between 2026-06 and 2026-07, mailbox.org went from 0.02% to 0.02% of all tracked sites, while Proofpoint went from 1.6% to 1.2%. mailbox.org is gaining ground faster in our index.

No. A site runs a single email host, so mailbox.org 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.