Email verification
Clean lists before you send
Remove addresses that will bounce, disappear or harm your reputation — and only pay for the ones that need checking.
Upload
CSV upload, pasted addresses or an existing contact list.
Review cost
We remove duplicates and malformed addresses first and show exactly how many credits are needed.
Verify
Checks run in the background. You can close the page — we email you when it is done.
Use results
Download verified, invalid and risky files, or save valid addresses into a list.
| Result | What it means | Recommended action |
|---|---|---|
| Valid | The domain accepts mail and nothing suggests the address is unsafe. | Send |
| Invalid | The provider confirmed the address cannot receive mail. | Remove |
| Mailbox error | The mailbox does not exist or cannot accept mail. | Remove |
| Domain error | The domain has no mail servers or does not exist. | Remove |
| Syntax error | The address is not correctly formatted. Not charged. | Remove |
| Disposable | A temporary inbox service. | Remove |
| Role based | A shared address such as info@ or sales@. | Send with care |
| Risky | Catch-all domains or signals of low quality. | Send with care |
| Unknown | The receiving server did not give a clear answer. | Re-verify later |
| Duplicate | Appeared more than once in your input. Not charged. | — |
Built-in checks cover syntax, domain and mail-server (MX) records, disposable domains and role addresses. Mailbox-level checks are available when your administrator connects an external verification provider. No verification method can predict every bounce; results reflect the state at the time of checking.