I signed up, thinking I would get a large amount of verifications per month. It's been a month, and lists of 10-15k are still getting verified? There is some throttling there which hasn't been outlined. Ignored repeated emails to cancel my subscription and refund for the first month as service was never properly provided. The trial seems fine and then when you signup it all goes to shit. DO NOT USE THIS SERVICE, THEY WILL NOT LET YOU UNSUBSCRIBE FROM BILLING.