When you are using your trial account you can only send text messages to your own verified numbers. When you sign up for a trial account, the number you use as part of the sign up process is verified by default. Click here to learn how to add a different verified number to your account.
Trial accounts allow you to try out Sinch products and services, but they have certain limitations:
You will only receive 2 units of your country’s currency as a test credit, for example, $2 USD for US based accounts.
You can only send unrestricted text messages to your own verified numbers in SMS, otherwise the content will be replaced by a test template.
You cannot buy Numbers, you can only test using a test Number that is provided by Sinch.
Certain destinations may not allow you to send test messages.
Certain channels and services are locked to Trial accounts.