[otrs] Questions about multiple companies in OTRS

Hello, I have multiple companies with multiple users in it, but not all employers from the company has users in my otrs. is there a way to create "generic" client in otrs that could have it´s e-mail changed based on the e-mail received or changed manually the problem is that I have a lot of e-mails from different companies and I can´t add them all as clients on my otrs, and I can´t use one default e-mail for the company because I need the survey to be sent to the user that opened the ticket was that clear? or it got confusing? Thanks