I’m driving myself batty trying to figure out why my Campaign emails are being sent from the general email account I set in Admin-->Email Settings instead of the Use Mailbox I define in the Email Marketing item. I think the Use Mailbox is set up correctly as a Bounce Handling Account (it's available for selection in the Email Marketing settings). But every campaign email I send comes from the General email account. The reply to address appears to pick up correctly from the Use Mailbox setting – as when I reply to a campaign email it does change to the address I set in the Use Mailbox settings.
I know it’s using the general email account for the initial send because if I change the general email account settings to another email address – the campaign email comes from the changed email account (changing nothing else).
Was this a bug in 6.0, or am I missing something to get the initial campaign email to actually send from the Use Mailbox settting?