Bulk email verification
Find the dead addresses before your sending reputation does.
Upload a CSV and get every address sorted into deliverable, risky, or dead — in one pass, 3,000+ emails per batch. Pay only for what you check, with credits that never expire.
100 free credits when you confirm your email. No card required.
What you get
Five layers of checking, one clear verdict per address.
Every address runs the full gauntlet. You get a plain answer for each one — and the reason behind it, so you can decide what to keep.
Real mailbox checks
We ask the receiving mail server directly whether the mailbox exists, rather than guessing from the domain. That's the difference between "probably fine" and deliverable.
Duplicates removed first
The same address three times in your export costs one credit, not three. You see the unique count and the exact price before anything is charged.
Disposable domains flagged
Temp-mail and throwaway providers are caught and reported separately, so signup-form junk never reaches your campaign.
Catch-all and role inboxes
Domains that accept anything, and shared inboxes like info@ or support@, are marked risky rather than quietly passed as good.
Any CSV, any column
We find the email column by name, and fall back to scanning every cell. No template to match, no manual mapping step.
Export what you need
Download the whole result set, or just the deliverable addresses, as a CSV with the verdict and reason on every row.
How it works
Three steps, and you keep the tab or close it.
Drop in your CSV
Drag the file onto the dashboard. We read it, remove duplicates, and show you the unique count and exact credit cost.
Confirm and walk away
Verification runs in the background. Close the tab if you like — large lists email you when they're done.
Download the clean list
Full breakdown with percentages, filter by any status, and export exactly the segment you want to send to.
Pricing
Pay as you go. Nothing recurring.
Buy a pack of credits, spend them whenever you like. One credit checks one address, and unused credits stay in your account indefinitely.
Enough to clean a mailing list end to end.
- Verify 5,000 email addresses
- Credits never expire
- Unlimited CSV uploads
- Duplicates removed before you're charged
The one most teams settle on. Four times the credits for three times the price.
- Verify 20,000 email addresses
- Credits never expire
- Unlimited CSV uploads
- Duplicates removed before you're charged
- Best value for regular senders
Agency and high-volume sending. Lowest cost per verification.
- Verify 100,000 email addresses
- Credits never expire
- Unlimited CSV uploads
- Duplicates removed before you're charged
Questions
The things people ask before signing up.
How many emails can I verify at once?
What exactly is a credit?
Do credits expire?
What do the result statuses mean?
Undeliverable — the address is malformed, the domain can't receive mail, or the server said the mailbox doesn't exist. Remove these.
Risky — a shared inbox like info@, or a domain that accepts mail for any address, so a positive result proves nothing. Send carefully.
Disposable — a temp-mail provider. Almost always worth dropping.
Unknown — the server gave an inconclusive answer, or it's a major webmail provider that can't be safely probed. Your call.
Why do some Gmail and Outlook addresses come back "Unknown"?
Is my list stored or shared?
What happens if a job fails partway through?
Can I use this from my own application?
Clean your list before your next send.
100 free credits when you confirm your email — enough to check a real list and see the results for yourself.
Start verifying for free