Can I create one space/project , and have five email requests, each request to have a different reply-to mail? So far I didn't find any documentation about it. If anything, I can implement a "project", client facing portal. Yet that might be more future proofing it, compared to the current scope I received as a task.
TL;Dr - 5 client facing emails each getting incoming issues as a ticket (space) for traceability. And reply-to default - changed to that email.