Bulk validation
Paste hundreds of emails at once and get valid / invalid lists in milliseconds.
Tools
Email List Validator
Paste a list of email addresses and instantly see which ones are valid and which are not. Runs entirely in your browser — nothing is sent to a server.
Format checking
Detects malformed addresses — missing @, invalid TLDs, double dots, and more.
Copy clean lists
Copy valid or invalid emails as a newline-separated list ready for the next step.
How to use Email List Validator
Step 1
Paste your email list
Add one email address per line from exports, signup lists, or CRM data.
Step 2
Run validation
The tool checks syntax and separates valid and invalid addresses instantly.
Step 3
Copy cleaned results
Copy valid or invalid lists separately for outreach, imports, or cleanup workflows.
FAQ
Does this verify inbox existence?
No. This tool validates email format syntax, not mailbox deliverability.
Can I check a large list of emails?
Yes. You can paste a bulk list and instantly split valid and invalid entries.
Is email data sent to any server?
No. Validation is performed in-browser and input stays on your device.