What is a Credit?

What is a credit and when is one used?

A credit is used when a prospect is contacted for the first time. No credit is used for finding prospects, they're only ever used when the first email is sent to a prospect successfully - i.e. bounced emails and follow-up emails will not cost you any credits.

You can see on the bottom left menu-field or on "Usage" how many credits you have used and how many credits you have left as well as the expiration date.