Email checker
Find out which email addresses work. Send only to real inboxes and get fewer bounced emails.
Paste your emails or upload a file. Duplicates are removed. No emails yet? Use the lead finder.
What the email checker does
How to use it
- Paste email addresses above, or upload a .csv or .txt file. We find the addresses in the text and remove duplicates.
- Click Check. A progress bar shows while it runs, and you can stop at any time.
- Download the results.
What it checks
Is the address written correctly?
Does the domain exist and have mail records?
Does the receiving server answer, and does that specific mailbox exist? This is tested through a live conversation with the mail server, without sending an email.
Disposable (temporary) email services, shared addresses such as info@ or sales@, and likely typos such as gmial.com, with a suggested fix.
What the results mean
The address passed all tests and the mailbox exists.
The address is invalid. The format is wrong, the domain has no mail records, or the mailbox does not exist.
The result cannot be determined, usually because the domain accepts all email (catch-all) or the server uses greylisting. Be careful with these.
Every result also shows the reason, for example “Mailbox exists” or “Mailbox does not exist”.
Charts and downloads
After a check you see a Passed, Failed and Unknown breakdown, the most common reasons and domains, and a split between individual and shared addresses. You can download only the Passed addresses, or all results.
Credits
1 credit for each Passed or Failed result. Unknown results are not charged. Addresses you have checked before are served from saved results.
Limits
No service is 100% accurate. Some mail servers hide whether a mailbox exists, which is why those come back as Unknown rather than a guess. A Passed result means the mailbox exists, not that the person wants your email.