CallFire C# SDK by CallFire provides developers a way to integrate their applications and websites to the CallFire services, enabling users to communicate with their customers via text and telephoning. This SDK is written using C#.
Bandwidth's SMPP-based SMS will be used to seamlessly connect with carriers in the U.S. According to the press release, Nexmo has become a new wholesale SMS customer using using short message peer-to-peer (SMPP) protocol. In separate email interviews I talked about this with Steve Leonard, EVP and GM at Bandwidth, and then with Nexmo's CEO and co-founder Tony Jamous. First, the interview with Bandwidth.
Sendbird has launched a new Announcements API that is intended to allow developers to build tools for communicating with large user bases about promotional marketing and messages. This new API will allow for these messages to be seamlessly integrated into public and private group chats.