Proton Mail vs register.it

Proton Mail is used by more websites in our catalog: 1,505 use Proton Mail and 256 use register.it.

register.it sites have the higher median Ahrefs Domain Rating (Proton Mail: 30, register.it: 33).

Between 2026-06 and 2026-07, Proton Mail went from 0.21% to 0.17% of all tracked sites, while register.it went from 0.03% to 0.03%. register.it is gaining ground faster in our index.

No. A site runs a single email host, so Proton Mail and register.it 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.