[luau] Shared Folders via Courier-IMAP... a replacement for Public Folders?!

[Ho'ala Greevy]

Has anyone used shared folders via Courier-IMAP before?  I've recently
enabled it on a production server and so far it runs great!  Not quite the
functionality of Exchange's Public Folders, but very close.
Curious to hear stories from others who have tried it,
Ho'ala