Upload a CSV or Excel file and validate thousands of addresses through our 16-point engine, including a live SMTP check. Download a deduplicated, safe-to-send list in minutes. Credits never expire.
Clean my list, 100 free See pricing No credit card required · pay only for Passed & Failed results · GDPR zero-storage.From messy export to safe-to-send in minutes, no setup.
Drop in a CSV or Excel file of addresses, or push them to the API for automated cleaning.
Each address is tested for syntax, domain, MX, live SMTP, catch-all, disposable, spam-trap and role status.
Export results grouped into Passed, Failed and Unknown, deduplicated and ready to mail.
The signals that actually protect your sender reputation.
Every address comes back with an unambiguous verdict.
Deliverable. Safe to send, keep these in your campaign.
Will bounce. Remove before sending to protect your reputation.
Catch-all domain. Send with care, or segment for a warm-up flow.
Mailbox providers judge you on bounce rate. Send to dead addresses and your inbox placement drops for everyone, even your best customers. A single clean before a big send is the cheapest deliverability insurance there is.
Whether it's a 2,000-contact newsletter or a multi-million-row database, the engine scales. Need it automated? The same account gives you a real-time API to verify continuously, plus SDKs for PHP, Python, Node.js, Go, Ruby and C#.
Pricing is pay-as-you-go and credits never expire, clean quarterly without losing what you paid for. Compare us against the leading verifiers.
Common questions about cleaning a list.
A bulk email verifier checks an entire list of email addresses at once, typically uploaded as a CSV or Excel file, and tells you which are safe to send to and which will bounce. Email Verifier API runs every address through a 16-point engine, including a live SMTP check, and returns a clean, deduplicated, safe-to-send list.
Upload your CSV or Excel file, let the 16-point engine validate each address (syntax, domain, MX, live SMTP, catch-all, disposable, spam-trap and role detection), then download the cleaned results grouped into Passed, Failed and Unknown. You can also call the API to verify lists programmatically.
Email Verifier API targets 98% accuracy using its 16-point engine. The only addresses no tool can be certain about are catch-all domains, which accept all mail at the SMTP layer, we flag these clearly as "unknown" so you can decide how to handle them.
It is pay-as-you-go: you spend one credit per address and you only pay for Passed and Failed results. Credits never expire and there is no subscription. Every new account starts with 100 free credits, no card required.
Yes. We operate a zero-storage policy: addresses are SHA-512 hashed and automatically deleted within 30 days, which keeps the process GDPR-friendly.
Start with 100 free credits, no credit card. See exactly how many addresses in your list are about to bounce.
Verify my list freePrefer to verify one address at a time? Try the free single email verifier or read the API docs.