SendinBlue Ruby Library provides developers with information on how to send email campaigns from their applications using the SendinBlue API. Developers can use this resource to integrate their applications with the API.
Businesses are taking advantage of the ubiquity of mobile devices and SMS. This tutorial describes how to send an SMS message to a phone with PHP using the Twilio API. Twilio provides numerous communications services, including the ability to make and receive phone calls through the browser, mobile or desktop, send and receive SMS and MMS messages, and handle short codes.
The Nexmo SMS API is a service that allows you to send and receive SMS messages anywhere in the world. Nexmo provides REST APIs, but it's easier to use their official Java SDK. This tutorial covers how to send and receive SMS messages with the SDK so that you can use them in your applications.