Question Aliases with of different domains

[MarF]

Hi,

my new webhosting provider uses the plesk web host edition.
Right now i didn't find a way to use email account with aliases of different domains.
e.G. I have the domain domain1.com and domain2.com

If I add an email account admin@domain1.com, I can add different aliases with the same domain e.g. admin2@domain1.com, but I didn't find an option to add admin@domain2.com. The domain of the email accounts is fixed and cannot be edited.

Is there a way to have admin@domain2.com as an alias for the account admin@domain1.com?
Can I generate an email with admin@ <anydomain_included_in_my_hosting_package>?

Best Regards
MarF