TheChecker is a free email verification tool. Check if a mailbox really exists and get rid of email bounces.
Accurate, fast and affordable email verifier.
1,000's of professionals from 80+ countries rely on our bulk email verification and email list cleaning services.
Reduce your cost per lead, avoid blockages, protect your sender reputation and increase your campaign’s ROI.
- Bulk email verifier
Use our web app to verify your current lists by simply uploading a TXT, CSV, XLS, or XLSX file.
- Real-time validation
Add real-time email verification to any website by just copying and pasting one line of code. It takes only a few seconds and requires no developer.
- Email verification API
Use our API to run bulk or single email verification straight on your web and mobile application or develop a white-label version of our email verification web app.
- Accurate results
Enjoy our 98% deliverability guarantee and get the best results.
- Affordable prices
We offer the most cost-effective service in the market. Try and see it!
- Awesome support
Even we have a simple UI, you can always count on us if you need help.