Clearout is an email verification company with an overall email verification accuracy of 97% on valid, invalid, Gmail, Yahoo, AOL, and other emails. It allows you to pick a plan according to your email validation frequency - one time or a monthly subscription.
Further, they even provided phone number validation. It certainly helps you to get rid of useless phone numbers in your databases. It saves lots of your time and even reduces your efforts while doing marketing through SMS. No other email checker provides this type of service!
Clearout is the standard email verification company being great in overall services.