Sending email click on send button getting error

Title summery: Verify send button functionality

prequisite: send button is present.

Step to Reprodce: 1. Type Email
2. Click on Send button
3. Observe it

Expected Result: Email should be send Succsefully massage display on the screen.

Actual Result: (color:red)Sending button does not working properlly
error massage should be display on the screen.(color)