Boring IT product search: Can Outlook + Exchange do this?

Probably needs an Outlook add-in or extra product of some sort but this is on a much smaller team than enterprise who would use something like http://www.kana.com/ or http://solutions.liveperson.com/email-management/ but here’s what I want to do:

A small team of people respond to the public with a shared mailbox account. Emails about certain topics or subjects we want to be QA-ed by a team lead. Is there any way to force team leads to have to sign-off in order to do QA on replies that the individual’s outgoing email?