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MailboxValidator Free Email Checker vs PurgoMalum

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

APIMailboxValidator Free Email CheckerHEALTHY94PurgoMalumHEALTHY83
Uptime · 30d
Uptime · 90d100%86.3%
Uptime · 30d100%85.0%
P50 · ms527423
P95 · ms11384833
AuthapiKeynone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

MailboxValidator Free Email Checker vs PurgoMalum: common questions

Which is more reliable, MailboxValidator Free Email Checker or PurgoMalum?

On our scheduled checks, MailboxValidator Free Email Checker leads on measured uptime — MailboxValidator Free Email Checker at 100% versus PurgoMalum at 86.3% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Which is faster, MailboxValidator Free Email Checker or PurgoMalum?

PurgoMalum has the lower median latency in our checks — MailboxValidator Free Email Checker responds in 527 ms versus PurgoMalum at 423 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.

Do MailboxValidator Free Email Checker and PurgoMalum need an API key?

PurgoMalum needs no key, while MailboxValidator Free Email Checker requires a free API key. If you want to start calling without signup, reach for PurgoMalum first.

Can I call MailboxValidator Free Email Checker and PurgoMalum from the browser?

Only PurgoMalum is browser-friendly — it returns CORS headers over HTTPS. MailboxValidator Free Email Checker needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are MailboxValidator Free Email Checker and PurgoMalum free for commercial use?

MailboxValidator Free Email Checker has unclear commercial terms, and PurgoMalum 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.