Mac FileTypes Entries for Mail

Entries in this subkey map the Macintosh file type and creator tags to MS-DOS eight-plus-three filenames. This is the Registry path for this subkey:

HKEY_CURRENT_USER\Software\Microsoft\Mail\Mac FileTypes

Mail uses these entry values to determine what application to launch on a file attachment that has been sent from a Macintosh mail client. There are two alternate forms for the entries:

creator:type=extension     or    :type=extension

Both the creator and type are sequences of four characters (possibly including blanks). For example,

:TEXT=DOC

launches the application associated with the extension .DOC (Word for Windows, for example) on any Macintosh file of type TEXT.