Bulk Email Verifier app will help you check email existence for free.

Bulk Email Verifier app will help you do email validation in bulk or individual email checking.

Bulk Email Verifier app supports import email marketing CSV file and do email verify base on the imported data.

Some impressive features of Bulk Email Verifier app:
- Support bulk email check by importing the CSV file, up to 1M emails!
- Support individual email checking.
- App will check email address is properly formatted (correct syntax), domain, MX server and email SMTP server existence, and server accept the email or not.
- Support export result to CSV file.
- Support auto resume if no internet or Bulk Email Verifier app was killed by the OS.
- Support black list MX server, this is a very useful and impressive feature of Bulk Email Verifier app!!!

We can sure you that Bulk Email Verifier app will help you clean up Gmail and google suite email with 100% correctness!!!

For the other email servers, it may be lower because they don't allow us to check email existence.