i have to send the email once the task is approved
can someone suggest me example which i can refer for email configuration for From,To, Subject, CC
Discussion posts and replies are publicly visible
https://docs.appian.com/suite/help/22.3/Send_Email_Smart_Service.html
Did you check the documentation? There are some examples of how to configure them properly:
https://docs.appian.com/suite/help/22.3/Configuring_Custom_Email_Senders.html