Email Verifier - Email verifier app lets you verify email.
TheChecker.co - Accurate email verification at low prices.
Email List Verify - The Fastest Way to Improve Email List Deliverability and ROI
BriteVerify - Email Validation & Email Verification reduces bounce rates up to 98%. Rapidly verifying email addresses has never been easier, just drag drop and deliver!
NeverBounce - Real-time email verification and cleaning to ensure emails never bounce.
useBouncer - The most intelligent email checker, that lets you focus on valuable relationships! Verify email address with simple App or easy-to-integrate API.