com.au vs mailbox.org

com.au is used by more websites in our catalog: 999 use com.au and 133 use mailbox.org.

mailbox.org sites have the higher median Ahrefs Domain Rating (com.au: 25, mailbox.org: 47).

Between 2026-06 and 2026-07, com.au went from 0.13% to 0.11% of all tracked sites, while mailbox.org went from 0.02% to 0.02%. mailbox.org is gaining ground faster in our index.

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