Hunter.io is an email finding tool that allows users to find and verify email addresses.
Features:
-  they give you a 30% revenue share within the first year of a customer's lifetime for every month;
 
-  when you want to apply for the program you have to give them some information about your promotional channels and tell them how you plan to promote them;
 
-  they'll provide you with all the resources and marketing assets you need, such as your own custom deep links or banner ads and text links;
 
-  their supports team is super active and helps get obstacles out of your way as soon as possible.