Email Verifier helps you verify your e-mail contact list. All you need is import your e-mail spreadsheet to this app and click verify.
This app supports export good e-mails to original format (your import file format), and simple format (each e-mail in each line).
Email Verifier will verify your e-mails base on these criteria:
1. Validate e-mail syntax.
2. Validate e-mail domain.
3. Validate MX record (verify that e-mail server exist of not).
This is completely free.