It's easy to use and also splits up the email list into the separate validation buckets, there's also a free catch-all email validation included in the check which is nice. The quality is great because we barely have bounces when verifying with ZeroBounce

ZeroBounce makes validating email lists quick, easy and worry-free. The interface is very intuitive and it's thorough list cleaning process means that my bounce rates are negligible. I consider it an essential tool for maintaining a healthy list.

It is extremely easy to use, both to import and export data. It provides a clear report on results.