Send SMS API 2.5

Send text messages to up to 1000 recipients

Messages can be sent in the mobile and fixed networks both in Germany and abroad. A standard text message contains 160 characters. If you've got more to say, multiple text messages are simply joined together, giving you space for up to 765 characters.

The API also features a function that lets you send a message to up to 1000 recipients at once. Each text message sent to each recipient is charged.

The Flash SMS option displays the content of your text message directly on the recipient's screen.

Phone number validation allows recipients to respond directly

Before sending a text message, any cell phone number can be entered as the sender. This function allows recipients to respond directly to the text message. For security reasons, each new phone number is validated once using a key word text message to check the correct sender phone number. Find out more about the call number validation here.

Once you have registered and activated the service, Send SMS is available to test free of charge in the sandbox. This mock environment simulates the behavior of services so you can test them with your applications, and helps you with the software and hardware integration.