Using MailExchange
You may use MailExchange to verify email addresses you have a lawful reason to hold, and you're responsible for following anti-spam and data-protection laws that apply to how you then email them.
Credits
One credit verifies one address. Credits don't expire. Unknown results and duplicates are refunded as credits.
Accuracy
Verification reflects what mail servers report at the time of the check. Mailboxes change, and some servers give misleading answers, so we can't guarantee that every deliverable address will accept every message.
Acceptable use
Don't use the service to harvest or guess addresses, to probe systems you're not allowed to, or to support sending unsolicited bulk email in breach of the law. We may suspend accounts that do.