CallFire PHP 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 PHP.
Twilio has announced that it will acquire SendGrid in an all-stock deal that totals $2 billion, the company’s largest acquisition to date. Twilio is well-known in the developer community for their API offerings. With the addition of SendGrid’s services, Twilio gains an already robust email service.