Review for ImportExportTools by Raptor007
Rated 5 out of 5 stars
Exactly what I needed, thanks!
I've been running the same Microsoft email database on my Macs since Outlook Express 4.0, and it's grown to over 10GB with multiple folders of messages. I stayed with Microsoft email clients so I could keep my full email history, but they're prone to database corruption and it was frustrating having to restore from backups and re-download new messages. So I exported from Entourage to a .rge container (just a fancy folder of .mbox files) and with this add-on I was able to quickly and easily re-import everything into the subdirectory layout I had before. Now Thunderbird has my full message history, yay!
To create your own collections, you must have a Mozilla Add-ons account.