So, it is now time for you walled garden email folks to say goodbye!
Much of your current access to your account is going away:
Breakage to follow - might want to migrate items like copiers and what not to another service for email connectivity.
Get ready for phone / webmail only access. Have fun with that.
..."on October 30, 2019, we’ll begin removing the setting to “Enforce access to less secure apps for all users” from the Google Admin console. "
I feel more secure already.