Does the job!
NeverBounce - Real-time email verification and cleaning to ensure emails never bounce.
Listmonk - Send e-mail campaigns from a powerful dashboard. High performance and features packed into one app.
Email Verifier - Email verifier app lets you verify email.
Sendy - Sendy is a self hosted newsletter app that sends emails 100x cheaper via Amazon SES
Email List Verify - The Fastest Way to Improve Email List Deliverability and ROI
MailChimp - MailChimp is the best way to design, send, and share email newsletters.