MsgFiler on the Mac App Store
MsgFiler Filing Script (for use with MsgFiler 4)
Find the version of MsgFiler 4 that you have by going to MsgFiler Settings > Support. The version and build number will be displayed at the bottom of the screen.
Older versions of the filing script
MsgFiler 4 Direct Download (purchase license on Gumroad)
MsgFiler 4.3.1 Beta (Build 65) Direct Download for Gumroad
Note: The MsgFiler Filing Script is built-in the Gumroad version of MsgFiler 4, so there is no need to download it separately.
MsgFiler Engine Mail Plug-In (for use with MsgFiler 3)
The Original MsgFiler Mail Plug-In (a.k.a MsgFiler Classic)