Investigate use of app password for gmail for notifications

[samuel-emrys]

A user commented:

You can set an app password under security at accounts.google.com. I just tested and it works. So no need to enable less secure access or turn off 2-step verification.

Investigate this and update the guide if this works successfully

[Jrjy3]

As anecdotal evidence, I have used an app password for this in the past and it has worked without problems. I would never disable 2FA on my google account, and app passwords are designed for things like this, where you can't use 2FA to log in.