Blackberry-like device, MacOS X, and/or IMAP?

[Tom Buskey]

Bruce Dawson wrote:
> My experience with squirrelmail is that it falls down when you have a
> large number of folders and/or messages. Whereas Horde/IMP was able to
> handle them without a problem.

I'm using squirrelmail at home for myself & my wife.  I have about 100 
folders.  About 20 folders are >1MB and 6 are >5MB.  I'm using UW-Imap 
for imap (mbox/mbx is ok for small groups).  I'n not having any issues. 
  How many is a large number of folders or messages?