Free bulk email checker
Paste up to 10 addresses, one per line. Each one gets a live SMTP check and a valid, invalid or risky verdict you can export as CSV — no signup required.
Frequently asked questions
How many emails can I check for free?
Up to 10 addresses per run and 10 checks per browser per day. For larger lists, a free account includes 2,000 validations and CSV uploads of up to 50,000 rows per file.
What file formats does the full bulk uploader accept?
CSV and TXT. Every original column in your file is preserved and returned alongside the verification result, so you can drop the export straight back into your CRM.
How long does a bulk list take?
Small pastes finish in seconds. Large CSV jobs run in the background with resumable processing, and you can download partial results while the job continues.
Verify the whole list
A free account unlocks 2,000 validations, CSV uploads up to 50,000 rows per file and an API for real-time checks at signup.