Outlook rule for two email addresses?

Our firm is changing it’s name, and with it the email domain. When the switch happens, we will need both active for awhile. I have DNS set up through our ISP, and have gone through Exchange and added a second email address to each mailbox. Emails sent to me@company.com and me@company2.com both arrive in my inbox. Is there any way to set up a rule, or by some other method, so that emails sent to the old email address get automatically put into a separate folder? It looks like the rules work by account (“sent to me”) not by the email address used to get to my account, and I can’t figure out how to filter by email address. Does that make sense? Any help would be appreciated!