Hello Tapas
Here's an example, I have a Contact Form with 2 fields (Name and Email)
Upon saving, I want it to send an email to the email provided on the form.

Upon saving, I want it to send an email to the email provided on the form.

On the Email Action, there's several properties you can configure such as to whom to send the email to, include someone as CC or BCC.

In addition to performing all of that, you must also ensure that your SMTP Configuration has been configured for it to be able to send emails.
You can configure it in Service Center

Below are links regarding such activities in Outsystems.
Sending an Email with Outsystems:
https://success.outsystems.com/Documentation/11/Developing_an_Application/Implement_Application_Logic/Send_an_Email_From_a_Web_Application
Outsystems Email Documentation:
https://success.outsystems.com/Documentation/11/Reference/OutSystems_Language/Processes/Process_Tools/Send_Email
Configuration of SMTP:
https://success.outsystems.com/Documentation/11/Extensibility_and_Integration/Configure_OutSystems_to_Send_Emails
Hope that answers your question.