Hello Kmspr,
Thanks for your feedback and thoughts here, this is really helpful. To add, the points above are general best practices, if it's not possible due to your business setup to implement them all them then at least you are aware and perhaps have the other things in place.
- On your first point: when you click the '+' symbol and add the email address, is this an existing Google gmail email you are using here?
- On the notifications: there could be a number of different things here so it's hard to tell ie. it might be that there weren't any warning notifications or the notification went to the spam filter. It is good to hear the closure warning reached your team though as this still gives you time to take action rather than finding out at a later stage - which is why I would recommend having this in place.
Hope to speak with you soon.
Thanks,
Lizzie