On Monday, February 10, 2003, at 10:49 AM, Bill Rising queried:

> Does Mulberry understand an iTools account? Does pine? If so, then it
> must be possible to configure a server to distinguish between the two
> types of containers, while still staying in the realm of unix mbox
> formats, unless Apple has hacked its server.

To most IMAP clients, .Mac looks just like a regular IMAP server. Apple 
has hacked things so Mail.app can do special stuff like make the little 
pictures appear across from the headers. I suspect the directory 
handling has also been tweaked. If you look in the ~/Library, the IMAP 
accounts look like IMAP:accountname, but the .Mac one looks like 
iTools:accountname.

> This is just one of those strikingly strange interface issues which
> remind me of, uh, unix.

Since Mac OS X is, uh, Unix, it seems like a good fit. I suppose a file 
system could be devised to do the recursive containment/file capability 
you want, but that would put some limitations on the portability of 
IMAP, wouldn't it? In order to create a standard that people are 
actually going to use, some concession to the lowest common denominator 
has to be there. This file/directory difference doesn't seem to me to 
be a Unix thing so much as an admission that this is available in all 
file systems.

By the way, the Unix mailbox structure is stupidly simple -- just 
concatenate messages in a text file. Go cat one and you'll see what I 
mean. It's up to individual programs to do the indexing and such. 
Mail.app does not use Unix mailboxes for it's cached messages on the 
local hard drive, but it seems to for local mailboxes.



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