I seem to have said this over and over in recent weeks...
In order to continue using gmail from Node-red, you have to set up an app password.
In order to set up an app password you have to turn on 2 factor authentication as described here
You do need to authenticate with 2FA when you login to create an app pasword see here but the app password bypasses 2FA.
Make a note of the app password because Google will never let you see it again. Insert this in the Password field of the email node settings.
The Email-out node settings are like this:
Email-in settings:
Because 2FA is a pain in the arm, it's a good idea to create a gmail address just for Node-red to use.
One thing that tripped me up: I had NR's gmail account set up to forward messages to my real email address and to mark the message as read. This setting prevents NR email-in finding messages in the inbox.
