Hi Alec,
The process you mentioned is correct and there had been no changes as to
how the email access can be granted. As for your questions, the #1 item
should not be possible since the email sent to the other AdWords account is
just an invitation to link (MCC to client account)
To whom it may concern,
It seems to me there are 2 ways to invite a user on an MCC account:
1. Create a ManagedCustomer and send an invite. This will create a
customer account managed by the MCC and allow a user to access it via their
google account (at the email address you