In YouTube, when logged in to a brand account, clicking on the account icon in top-right corner and then going to:
Manage your Google Account > Personal info > Contact info > Email
and then clicking there brings up this page:
On that page, "Learn more" is linked to https://support.google.com/accounts?p=emails , which redirects to https://support.google.com/accounts/answer/6316959 , which does not appear to apply to this page because it gives instructions for changing the Google Account email, whereas this page says the Google Account email cannot be changed.
On the page, the "Google account e-mail" address is:
<brand account name>[email protected]
nnnn is an apparently random, four-digit number.
Sending an e-mail to that address gets a bounce message that says:
- Message rejected. See https://support.google.com/mail/answer/69585 for more information.
Clicking on that link redirects to:
which lists some possible reasons for getting the bounce message, the first of which is
- The email account that you tried to reach does not exist
And indeed, removing a character from the e-mail address and sending to that non-existing address gets the same bounce message, so it appears that the address given as the "Google account email" behaves as if it doesn't exist.
Below that address, under "Contact email" is the message:
- Emails will be sent to the primary owner of this account
which seems to be saying that the "Google account email" address is not actually used for sending e-mails.
The page also says that the Google Account email is:
- The address used to identify your Google Account to you and others.
But I haven't seen this address anywhere except on the page shown above.
So the Google Account e-mail address for the YouTube brand account doesn't seem to be able to receive e-mails, and it doesn't seem to be used anywhere to identify the account, so what is this e-mail address actually used for?