The Twilio C-Sharp Helper Library allows developers to write C# code in order to make HTTP requests to the Twilio API. The Twilio API provides a simple HTTP-based API for sending and receiving phone calls and text messages.
YouMail launched its Spam Risk API. YouMail uses algorithms to analyze a database of hundreds of millions of phone numbers to determine the likelihood a particular phone number is spam. Historical call patterns and crowdsourced data are combined to determine an OK, caution, or danger designation.