Mailgun

esp 🇺🇸 US

Sinch Mailgun — developer-first transactional/relay email service.

25,293SPF-authorising domains

4.06%of all SPF domains in Tranco top-1M

521distinct TLDs

2026-04-28snapshot date

Historical Share

com — 13,674 (54.1%)

org — 1,385 (5.5%)

co.uk — 669 (2.6%)

net — 645 (2.6%)

nl — 537 (2.1%)

io — 522 (2.1%)

de — 502 (2.0%)

com.au — 335 (1.3%)

ru — 297 (1.2%)

com.br — 284 (1.1%)

fr — 272 (1.1%)

co — 239 (0.9%)

ca — 225 (0.9%)

it — 210 (0.8%)

se — 184 (0.7%)

lt — 162 (0.6%)

edu — 142 (0.6%)

cz — 142 (0.6%)

ai — 133 (0.5%)

dk — 130 (0.5%)

eu — 123 (0.5%)

be — 121 (0.5%)

pl — 118 (0.5%)

no — 114 (0.5%)

es — 111 (0.4%)

org.uk — 104 (0.4%)

fi — 100 (0.4%)

app — 96 (0.4%)

in — 94 (0.4%)

gr — 86 (0.3%)

Showing 100 of 25,293 domains. Sample sorted by length (shortest first).