The Checker

TheChecker offers email address verification solutions that improve data quality, deliverability, and email marketing ROI. We’ve developed an email verification tool, which has one of the best deliverability rates and speed on the market. We have a web app that verifies email lists, a copy-and-paste integration that you can add real-time email verification to any website and an API to run bulk or single email verification straight on the web and mobile applications and to the development of white-label versions.