Re: Wanted: HyperMail Done Right

1995-12-27 00:53:56
[Dan discusses several approaches to storing and mangling mail messages 
including MH folders, bezerkley, etc., then discusses an object based model.]

Without getting into objects, the easiest way to handle mail message
storage is using the University of Washington C-Client library, which is
used in pine and loads of other mail readers and servers. That gets you a
common interface to just about every mailbox format since the dawn of
time, including simple access to IMAP.

With IMAP, you can use really cool mail stores like CMU's cyrus imapd, 
which keeps databases of headers allowing really fast access to even the 
biggest mailboxes. Using c-client to build a server module, and using 
cyrus as the mail store should let you leverage things really fast.

(see for details both 
cyrus and most everything else mailish)

(defun modexpt (x y n)  "computes (x^y) mod n"
  (cond ((= y 0) 1)     ((= y 1) (mod x n))
        ((evenp y) (mod (expt (modexpt x (/ y 2) n) 2) n))
        (t (mod (* x (modexpt x (1- y) n)) n))))