Does the job!
ZeroBounce - Removes invalid emails from your list to prevent email bounces from ruining your deliverability.
NeverBounce - Real-time email verification and cleaning to ensure emails never bounce.
Email Verifier - Email verifier app lets you verify email.
clearout.io - Clearout Email Finder & Email Verification Service - Drive sustainable business growth by expanding your reach, lowering hard bounces, and improving deliverability rates.
Email List Verify - The Fastest Way to Improve Email List Deliverability and ROI
useBouncer - The most intelligent email checker, that lets you focus on valuable relationships! Verify email address with simple App or easy-to-integrate API.