Email Verifier - Email verifier app lets you verify email.
NeverBounce - Real-time email verification and cleaning to ensure emails never bounce.
Email List Verify - The Fastest Way to Improve Email List Deliverability and ROI
TrueMail.io - TrueMail.io is an email checker service.
Verimail - Clean up email-address lists of any size or use our powerful API for real-time verification.
useBouncer - The most intelligent email checker, that lets you focus on valuable relationships! Verify email address with simple App or easy-to-integrate API.