arsmtp.com vs pair.com

arsmtp.com is used by more websites in our catalog: 2,813 use arsmtp.com and 801 use pair.com.

pair.com sites have the higher median Ahrefs Domain Rating (arsmtp.com: 30, pair.com: 32).

Between 2026-06 and 2026-07, arsmtp.com went from 0.34% to 0.32% of all tracked sites, while pair.com went from 0.10% to 0.09%. pair.com is gaining ground faster in our index.

No. A site runs a single email host, so arsmtp.com and pair.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.