SweetP Productions Meta v2.0.3 Mac OS X

Meta - message tagging for Mail.app. Harness the full potential of spotlight right inside Mail! Add custom keywords to mail messages, then create smart folders for better message management.

Features:

• Intuitive tagging: access Meta, from all the expected places; the "Message" menu, the messages contextual menu, or right-click directly inside the message.
  
• Batch Tagging: tag multiple messages at one time for ease of use, and better productivity.
  
• OpenMeta support: Meta utilises the powerful open-source OpenMeta framework, making all tags instantly accessible by numerous other tagging applications.

Homepage: http://sweetpproductions.com/