ANNOUNCEMENT: Nexmo SMS API currently only available to send SMS messages to countries that don't require a virtual number. (Ex/ Japan) Nexmo's SMS API allows you to send and receive text messages to users around the globe through simple RESTful APIs.
Twilio's Programmable SMS API helps you add robust messaging capabilities to your applications. Please read pricing details carefully.
As part of Twilio's account security offerings, the Twilio Verify API makes it simple to add phone verification to your web application. It supports codes sent via voice and SMS.
Reduce undeliverable messages, identify local-friendly number formats, and resolve caller names with Twilio Lookup. Find phone types, carriers, and more; Lookup allows you to programmatically get information about phone numbers so you can be as effective as possible.
Delivers patented phone-based verification and two-factor authentication using a time-based, one-time passcode sent over SMS
Our secure SMS API is the only tool you'll need to schedule, send and receive messages from your existing systems. It's robust too - even the most demanding applications see high message throughputs using our API.
Detailed and actionable global phone number and subscriber data intelligence to strengthen authentications, evaluate fraud risks, and enhance the user experience
Delivers reputation scoring based on phone number intelligence, traffic patterns, machine learning and a global data consortium
The smart way to get real-time intelligence on numbers anywhere in the world and protect yourself from fraud and spam.
MessageBird provides a simple and fast API for sending and receiving text messages (SMS) all over the world. Other related services are HLR-Lookup (network query) and sending and receiving Premium SMS messages.
Sign up for a free account at https://clicksend.com ClickSend is not a free service. Pricing can be found here https://clicksend.com/?r=pricing/
Intelligent Technologies SMS API. Allows sending and receiving of SMS messages. An account is required. Sign up for free at http://inteltech.com.au Send messages to any country in the world.
This command can be used to send text messages to either individual numbers or entire contact groups.
SMS stands for Short Message Service and is also commonly referred to as a "text message". Traditionally, developers had to learn and use the SMPP protocol to integrate messaging into their applications. More recently, APIs have made it a lot quicker and simpler for developers to implement text messaging or SMS. Popular applications such as Lyft, Uber, and Airbnb use SMS APIs to send verify users and send notifications.