Hey Ben!
At the moment, the email associated with the Owner will receive all the updates regarding credits limits, etc...
Unfortunately all the emails/notifications can only be associated with one email at the moment.
I believe the Lindy is understanding your question as just changing your email to login.
The only way to do this would be to invite the email address that you want to be the owner of the account to the workspace and having both your email as an admin and the owner as another email. The caveat would be that it costs $19.99/ month for every extra member in the workspace.
Please let me know if I'm understanding the question correctly!