Is a lookup credit used for results with no email address or invalid addresses?

Though we do see around 80-85% or more success rate with our searches, we can't guarantee that all searches will always bring back a valid result (for reasons beyond our control). The same resources are used to do those searches however as for the searches that do return valid results, so yes, anytime you click the 'Show Contact Information' button for a new contact a lookup credit is used. This has been taken into consideration with all of our pricing plans already however. 
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