OK, here's the deal: I have thousands of e-mails in mail.app that are distributed across a lot of mail folders. A lot of these e-mails are pretty ancient and I'd like to archive them on removable media since it's taking up valuable disk space (about 1.5GB) and slowing down Spotlight. Is there any way to archive e-mails in the same folder structure based on the age of the e-mails? What I would like is the equivalent of Archive in Outlook whereby the same folder structure is created and e-mails are moved from online to archive when they exceed a given age. I am aware that e-mails can be searched for based on age and dragged into the Finder to create an archive file but I presume that will destroy the current organisation. Is what I want possible and, if so, how can it be achieved? I am not adverse to spending a bit of money on the solution as this is pretty important.