dovecot - Dec 2011 - Using Amazon S3 storage for Maildir ?

I wonder if anyone has tried using an IMAP server with Amazon S3 as a 
backend.   There would be many factors to consider (speed, etc).   
However, moreso, I don't know that Maildir(++) would support multiple 
folders that might be linked into the cloud.  For example, higher-I/O 
local incoming mail is on disk, some folders archived on S3.   Could be 
easily done by simply creating another account and storing its Maildir 
in S3 --

Curious....

On 19.12.2011, at 19.35, Forrest Aldrich wrote:
> I wonder if anyone has tried using an IMAP server with Amazon S3 as a
backend.   There would be many factors to consider (speed, etc).   However,
moreso, I don't know that Maildir(++) would support multiple folders that
might be linked into the cloud.  For example, higher-I/O local incoming mail is
on disk, some folders archived on S3.   Could be easily done by simply creating
another account and storing its Maildir in S3 --
Maybe [sm]dbox with alt storage set to S3?
http://wiki2.dovecot.org/MailboxFormat/dbox#Alternate_storage