This client library written in Ruby allows developers build headers for the SendGrid SMTP API in Ruby. The SendGrid SMTP API allows developers to deliver custom handling instructions for email. SendGrid is an email application.
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.
Our API directory now includes 199 email APIs. The newest is the Uptime Robot API. The most popular, in terms of mashups, is the SendGrid API. We list 10 SendGrid mashups. Below you'll find some more stats from the directory, including the entire list of email APIs.