Automatic Email Manager 9 works fine with modern authentification, you don't need to use this trick with App password.
I use Office 365 and my account uses dual authentication, how to use in Automatic Email Manager
You need to connect to your Office365 account and define a specific 'App password' to use in Automatic Email Manager.
I suggest you read this Microsoft tutorial:
https://support.office.com/en-us/article/Set-up-multi-factor-authentication-for-Office-365-users-8f0454b2-f51a-4d9c-bcde-2c48e41621c6
