A credit is a unit of payment for finding or verifying emails, where one credit equals one found or verified email. For example, if you have 100 credits, you can search or verify 100 email addresses. But credits are charged only when you get the results of either the search or verification. You won’t be charged for the results you didn’t get. You will also not be charged a credit for searching for an email address you’ve already searched before.
To try out how credits work, you can sign up for a free account and get first 50 Find and 100 Verify credits on us.