@PriyankaP9167 The SMTP connector is strictly for sending emails via SMTP. It would require your mail provider to support SMTP. They would need to provide the specific details on what settings you'd need to provide. If Gmail or whatever your provider is supports SMTP, they should be able to provide you the information needed.
I did a quick search and it looks like Gmail requires HTTPS for sending (which is not an option available on the component). You could do this in a script however.
There is no component built-in to Robotics other than the Outlook component for receiving emails. You might look into using the Pega platform for this as it has many more email capabilities. If you are only using Robotics, then you will be limited to interrogating the web pages where these emails are presented and attempting to interact with those fields in that manner.