MailFollowUp Mail Plugin adds a "Follow Up" item to the Message and contextual menus (and optional toolbar item) of Apple's Mail application that allows you to compose (and then send) a quoted version of the original message to all of the original recipients, keeping the To, Cc and Bcc addresses exactly as they appeared in the original message.
What's new in this version:
FIXED: Resolved issue preventing follow-ups on some or all messages in conversations. FIXED: Resolved issue where followup toolbar button(s) would change to the flag icon under some circumstances. Updated for Mac OS X 10.7.3.