Verifying your email list is easy just drag & drop your email list into the window, or import it from your Email Service Provider (ESP). Briteverify scans the list to show you your total records and cost, at the click of a button you are off and running. After verification is completed, you can download your list, or automatically unsubscribe invalid and risky emails from your campaigns.

Not to have you spill the secret sauce but in general terms, how does it work?

Really cool! Does it work with one-off emails or it has to be a bulk email file upload?

How accurate is it?

Yup, we have an API and a neat Javascript Forms script snippet (BriteForms), either of which you can use for one-by-one email verification.

I just tested it with 68 emails and all are invalid by your system which is not true. :-/