Email List Verify - The Fastest Way to Improve Email List Deliverability and ROI
Trumail - Free email verification API
BriteVerify - Email Validation & Email Verification reduces bounce rates up to 98%. Rapidly verifying email addresses has never been easier, just drag drop and deliver!
Bouncebuster by Overloop - Bouncebuster is a real-time email verifier that helps you fight bounce & increase email deliverability.
Proofy - Quickly validate and verify your email lists.
Kickbox - Verify your email address lists with our drag and drop interface, or integrate into your app with our API. Prevent fake and bot account sign-ups by confirming your users are real humans with a real email address.