How do you setup SMTP after a P2T refresh

Summary:

After a P2T, how do you set up SMTP so we can get email notifications during approval workflows?

Content (required):

After a P2T, how do you set up SMTP so we can get email notifications.

Version (include the version you are using, if applicable):

23C

Code Snippet (add any code snippets that support your topic, if applicable):