I require your supportt for the following problem:

I've a group email address (suppose support@step-net.it). This group forwards mail to 3 new address (user A, user B, user C)à. I would automatically insert an ID in the subject of the forwarded mail(e.g. [SUPPORT] <Original mailsubject>) to identify mails received through the mail group address from that sent directly to user A mail address (or user b OR C)

Is it possible (I think yes; it's a  basilar function for many mail server) Where I can read a guide for this problem?

thanks fo your support