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esp 🇺🇸 US

Transactional email service known for high deliverability and developer UX.

2,943SPF-authorising domains

0.472%of all SPF domains in Tranco top-1M

154distinct TLDs

2026-04-28snapshot date

Historical Share

com — 1,688 (57.4%)

org — 151 (5.1%)

net — 86 (2.9%)

io — 85 (2.9%)

co.uk — 70 (2.4%)

nl — 67 (2.3%)

de — 50 (1.7%)

co — 47 (1.6%)

com.au — 46 (1.6%)

se — 29 (1.0%)

com.br — 29 (1.0%)

be — 28 (1.0%)

no — 27 (0.9%)

app — 27 (0.9%)

ca — 25 (0.8%)

ai — 22 (0.7%)

fi — 22 (0.7%)

it — 21 (0.7%)

dk — 20 (0.7%)

fr — 18 (0.6%)

ru — 18 (0.6%)

cz — 17 (0.6%)

eu — 15 (0.5%)

org.uk — 14 (0.5%)

ch — 14 (0.5%)

me — 12 (0.4%)

edu — 11 (0.4%)

es — 10 (0.3%)

ro — 9 (0.3%)

tv — 9 (0.3%)

Showing 100 of 2,943 domains. Sample sorted by length (shortest first).