What is a “Lookup”?
A ‘lookup’ is the term we use to measure the activity of your Addressfinder account.
One lookup is counted every time you or a user collects address metadata. This could happen when a user selects a verified address from the widget dropdown, or when you make a direct call to the Metadata API. The searching and display of addresses is not charged.
One lookup is also counted when an address verification call is made and Addressfinder considers the address to be valid. Invalid email addresses are not charged.
Lastly, one lookup is counted when using the address verification API, either via the portal or direct API. Only verified addresses are charged as a lookup.