Free tool
Email verifier — instant results.
Check if any email address is valid, deliverable, and safe to send to. No sign-up required. 5 free checks per day per IP.
12 checks
Syntax, MX, SMTP, SPF, DKIM, blacklists and more
Score 0–100
Machine-scored deliverability confidence rating
Bulk API
Verify millions of emails via CSV upload or API
No bounce guarantee
Verified lists see <4% bounce rate or we reprocess free