# Test SMS Server Settings via API tool | OpManager Help

## Third party API tool

Third party tools like Postman will help you to check whether the API is successful or not. Provide the details which should be used in the SMS server settings and you can cross verify once here before configuring in OpManager.

You can add the extension to your browser from [here](https://chrome.google.com/webstore/detail/postman/fhbjgbiflinjbdggehcddcbncdddomop?hl=en) and sign up on their [website](https://www.postman.com/).

1. Please provide the base URL of the SMS gateway provider and select the API method as POST or GET.

![Postman: Third party tool integration with OpManager](https://www.manageengine.com/network-monitoring/help/images/test-sms-server-service-2.png)

2. Please provide the body with the required "HTTP parameters" you provide in OpManager.

3. Provide the headers under Headers tab which you will use it as "Request Headers" in OpManager.

![Postman: Third party tool integration with OpManager](https://www.manageengine.com/network-monitoring/help/images/test-sms-server-service-3.png)

4. Click "Send" and check the status.