TheChecker.co

The JS Widget is the most amazing part of TheChecker, love how simple it is and it just works! It helps keep my registration database clean. Love it.

I tried a lot of these tools but TheChecker beats them all. Perfect UX, the verification works great and offers several options for exporting. 10/10

Really useful. I got a deal on Appsumo exactly when I needed to perform some list higiene. It worked perfectly! I don't do email validations very often so I love the fact that they have a credit system and not a subscription sistem.

Love TheChecker. Looking forward to trying this out!

I'm using in the last ~6 months and I already recommended a lot. =) It's an easy go for the team to check before any email mkt campaign.

It's easy to use, when I was searching for an e-mail checker tool it was the one that looked more reliable, and it really is. The support is fast and effective. I surely recommend this product and company.

I've been using this JS validator on my websites for newsletter signups and it's definitely helping people see that they've made a typo --> so my list is cleaner.

Users are more suspicious than ever, and the once-fringe idea of inputing a fake email address has become A LOT more common. The widget stops that behavior right at the form, and keeps your lists clean and deliverable.

TheChecker, es una herramienta grandiosa muy facil de utilizar y eficiente. Yo la utilizo desde hace casi un año ya y estoy encantado con las API de conexión y otras herramientas de integración que ofrecen. Realmente muy buenos. Los recomiendo totalmente.

São sensacionais, tanto em termos de produto quando em atendimento. Um produto muito confiável e escalável. TheChecker sempre leva os feedbacks de seus clientes em conta, quando vão desenvolver algum produto. Forte abraço Bernardo.