INSUFFICIENT_ACCESS: User does not have a verified email address: 0055i000003cZC3 I have alerady completed all the steps in a correct manner still I am getting this error.

@Reddypalli Saikiran

did you check IF the sender email address is a valid one to use in the send action? go to 1 - Setup 2 - type in the quick find. "organization" and check for Organization-wide-Address 3 - check if the sender email is add IF NOT add the email and way for the email verification sended by Salesforce, validate it when received and try to do the action again IN send the email