mailbox.org vs Proton Mail

Proton Mail is used by more websites in our catalog: 133 use mailbox.org and 1,505 use Proton Mail.

mailbox.org sites have the higher median Ahrefs Domain Rating (mailbox.org: 47, Proton Mail: 30).

Between 2026-06 and 2026-07, mailbox.org went from 0.02% to 0.02% of all tracked sites, while Proton Mail went from 0.21% to 0.17%. mailbox.org is gaining ground faster in our index.

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