So there's no option in QBO to have your estimate send from a different email address than your invoices?  They will all send for the "forward facing" address?  I'm not a fan of a workaround that asks people to respond to a different email than what it came from since most people will hit replay.  Our sales team and invoicing team are 100% separate so we'd like the option to have different email addresses for each form.  Seems like a fairly simple ask.

Thanks,