Understanding SMTP Authentication in SQL Database Mail Configuration

Question

In the SQL Database Mail Configuration Wizard, basic authentication is currently being used. Does this imply the use of interactive or non-interactive login? Some articles suggest that providing a username and password constitutes interactive login, while others state that since the password is configured only once and emails are sent without user interaction with the mail server, it is non-interactive. The requirement is for a non-interactive login. Clarification and need help to setup non-interactive login .