I have gotten email from an external person addressed to an account firstname.lastname@example.org instead of email@example.com.
& is a valid character in email addresses.
It is caught in the catchall and I would like to add it as an alias/nickname of firstname.lastname@example.org
But it isn't allowed.
I'm thinking of putting a forwarding rule in the catchall, but this requires the user to click and approve.
Are there any other options? For instance, the email@example.com routes to firstname.lastname@example.org automatically, but this doesn't seem to do that since both email@example.com and firstname.lastname@example.org already route to email@example.com as nicknames/aliases.