Free tool · Email Checker
Is this email
really deliverable?
Paste an email. We run an SMTP check and tell you whether it's deliverable, risky, or invalid.
Why use Email Checker?
SMTP check
Real-time validation
We connect to the destination mail server and verify the address actually exists.
Deliverability score
Beyond syntax
We catch catch-all domains, role-based addresses, and disposable mailboxes — not just typos.
Free
No signup, no credit card
Validate as many addresses as you need. Bulk validation? Book a demo.
01What does 'risky' mean?
It means the address is technically valid but likely to bounce — catch-all, role-based, or disposable.
02Is the address kept private?
We only use it for the live check. We don't store individual lookups.
03Why might a result be wrong?
Some servers refuse SMTP probes. In those cases we mark the result as 'unknown' rather than guess.
04Can I check thousands at once?
The free tool is one-by-one. Pronto's paid product handles bulk.
More free tools
Need this at scale?
Pronto runs the same waterfall enrichment across your entire CRM, continuously.
Book a demo