Proton Mail vs stackmail.com

stackmail.com is used by more websites in our catalog: 1,505 use Proton Mail and 2,434 use stackmail.com.

Proton Mail sites have the higher median Ahrefs Domain Rating (Proton Mail: 30, stackmail.com: 17).

Between 2026-06 and 2026-07, Proton Mail went from 0.21% to 0.17% of all tracked sites, while stackmail.com went from 0.35% to 0.28%. Proton Mail is gaining ground faster in our index.

No. A site runs a single email host, so Proton Mail and stackmail.com 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.