The official Verifalia C# SDK by Verifalia communicates with the API to implement email verification features into applications. Sample code available on GitHub demonstrates how to validate email addresses once authorized with token.
Email newsletter campaigns are often a big part of a company's marketing strategy, and with that comes the costs involved. Sendy is a self-hosted email application that prides itself on being one hundred times cheaper than some other email services. The Sendy API makes this cost effective solution available to developers who may want to integrate the data into other applications.
Railsware, creator of Mailtrap (email test environment), has released the Mailtrap API. Mailtrap provides a "fake" SMTP server so developers can test email environments without the need of actual customers or users. Mailtrap has proved a useful tool to the developer community; however, API access to Mailtrap features has been desired for third party integration. Mailtrap Product Manager, Pavel Pavlovsky, announced that numerous developers requested API access over the past year and Railsware is happy to announce its availability.