Is Odoo able to show the incoming mails where there is no active alias on the system - somehow?

Lets say we have the alias user.test@erp.com and our client writes to user.testtest@erp.com. Through the catchall the email will go into the system. But there it will never be seen again. I would like a group with "email without receiver" where everything is collected that cant be adressed in the system.

Possible?

Thanks in advance

Tobias