[Dovecot] using mbox but, can't create subfolders

[Curtis Maloney]

blaq b0x wrote:
> Well,
> 
>  I noticed that the  "Let this folder contain subfolders" check box is gone in the Folder options.  How do I get this back.

That's an issue for your mail client.

mbox uses a single file to hold all the messages in a "folder".  A sub-folder is 
just a directory.  So, it's not possible, in "standard" mbox, for a sub-folder 
itself to contain messages - a directory can't hold messages.

Some systems use a hidden extension so you can have subfolders with the same 
name as a mailbox.  I'm pretty sure Eudora and Thunderbird do this for their 
local storage.

In Maildir, the file layout is somewhat more complex, but the spec is such that 
you can have folders containing messages and subfolders.  It does this by only 
having one level of directories, and the directory names being 
Maildir/.subfolder.subfolder.folder, with cur, new, and tmp underneath that.

In theory, there's no reason a mail store couldn't be devised that created mbox 
names in this same fashion.

--
Curtis Maloney
cmaloney at cardgate.net