shipapis
StarSubmit an APISubmit API

Ayrshare vs MailCheck.ai

Same instrument, two spec sheets — measured, not claimed.

APIAyrshareNEW—MailCheck.aiNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree — limits not published
Rate limitUnpublished5 req/window · 4 remaining
In directory since2026-07-052026-07-05
operationalpartialdownno data

Ayrshare vs MailCheck.ai: common questions

Which is more reliable, Ayrshare or MailCheck.ai?

On our scheduled checks, MailCheck.ai leads on measured uptime — Ayrshare at —% versus MailCheck.ai at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Do Ayrshare and MailCheck.ai need an API key?

MailCheck.ai needs no key, while Ayrshare requires a free API key. If you want to start calling without signup, reach for MailCheck.ai first.

Can I call Ayrshare and MailCheck.ai from the browser?

Yes — both Ayrshare and MailCheck.ai send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.

Are Ayrshare and MailCheck.ai free for commercial use?

Ayrshare has unclear commercial terms, and MailCheck.ai has unclear commercial terms. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.