Use Test Messaging link on the Salesforce Embedded Service Deployment to quickly test the Salesforce Messaging for In-App and Web Configuration.

1. Setup Messaging for In-App Web. If you haven’t done this step, check the following link:

Messaging for In-App and Web Setup for Web Chat in Salesforce

2. Open the Embedded Service Deployment created as part of the Step 1.

3. Use the “Test Messaging” link to quickly test the Salesforce Messaging for In-App and Web configured in the Step 1.

Salesforce Help Article:

https://help.salesforce.com/s/articleView?id=sf.miaw_web_test.htm&language=en_US&type=5