Reduce your bounce rates and improve your campaign’s performance with the most cost-effective email validation service.
Trusted by 1,000's of forward-thinking teams in 170+ countries
Use our online bulk email verifier to increase inbox deliverability rate and improve campaign performance in no time.
Add our real-time email checker to your current HTML forms by just copying and pasting one line of code. No custom development needed.
Don't take our word for it. Here's what our customers think.
"TheChecker has been the saving tool during my prospects! It helps me maintain excellent SMTP deliverability and find decision-maker emails when I have only his first and last name."
"I didn't know how many leads I missed due to bad invalid lists and sending reputation problems. TheChecker has made it very quick and easy to dramatically improve the quality of the campaigns and to generate new sales opportunities through email. I strongly recommend it!"
"Here at LeadLovers, we are always looking for smart tools that help us to improve our email deliverability even more. By integrating TheChecker in the lead acquisition flow, we got amazing results in the prevention of sending reputation issues."
"The best! It's easy to use; the results are great. All works perfectly. We reduce all our marketing complaints and fake registers."