No setting for Russ

The mistake

The shop's outbound mail is landing in spam, most likely because the sending domain lacks proper SPF/DKIM/DMARC alignment or has a burned sender reputation. Instead of fixing domain authentication, the team switches the From address to Russ's personal email, which does dodge spam filters but also makes every reply-to and future correspondence resolve to one person's inbox. There is no config flag to undo that binding once nine thousand customers have it as their contact address; it has to be migrated by hand, one thread at a time.