For any business or website that relies on user or customer interaction, communication is important, and often the only point of contact a business may have with that customer is an email address. This is where email validation can lend a helping hand; as long as mail can be successfully sent to an address all is good, but if there's some issue causing failed delivery and other errors, better to know about it. Email Pie is a free, JSON API that provides a simple way to validate email addresses.
The API economy continues to grow but one impediment to this growth is the friction involved when trying to pay for API access. Smoothing this friction may require a change in the handling of API monetization, something the open-source API Network looks to solve through the use of cryptocurrency.