NortoN Safe Email

I've just bought Norton Safe Email to add to 360.     The end of the installation  process says: 
"Sign In to Connect Norton Safe Email
Norton Safe Email needs access to your email account, so we can flag potentially suspicious emails. Your password will be encrypted — even we won't be able to see it."

No provision for setting  a new password, so I've presumed that this is either a Norton password or the one for my email account, but none work!    What password is wanted, please?    

John

fwiw ~

Set up Norton Safe Email
https://support.norton.com/sp/en/us/home/current/solutions/v20231009180506417