I would be nice to have bcc option at the time of emailing inovice to customers or may be an option that businesses who are sending invoice also receive a copy by sales invoice.
I vote for this.
I believe this is actually part of a larger issue - that MYOBs Email sending capabilities simply don't include many features that Outlook offers. This is why i made a suggestion to add a setting to get MYOB to compose the Email in Outlook, but NOT send it (at the moment it composes the email in Outlook and sends it automatically with no way to stop it or change it) - this will allow the user to modify the contents, add attachments, etc.
Here's a link to my suggestion made a while back, although unfortunately it didn't gain any traction: http://community.myob.com/t5/AccountRight-Idea-Exchange/Compose-email-in-outlook-BUT-DON-T-SEND-YET/idi-p/361131