There are plenty of Pay Per Lead (PPL) affiliate programs in the world. You just need an email address to make money through these programs by adhering some terms and conditions. You can make excellent extra income by joining these programs.
Grammarly Affiliate Program
Designhill
Freepayperlead
Born To Sell
Kevin Fahey’s Program
Threemouseclicks Affiliate Program
Cashsuperstar PPL Program
Web Wealth System