if its on a unix based system and you have a shell account on it, open the mbox with pine. yes, those command line applications really do kick ass. first off, move the mbox to a new directory(copy it). configure pine to open the mbox in the new place. it will take a couple minutes, but once you have your messages open in pine, use the 'export' or 'save' commands to filter a couple 1000 off at a time to a seperate file(learn how using the help commands in pine) in your directory. once you have, say 55 saved files with 1000 messages a piece, move one of them to your spool file(usually /var/spool/mail/user ) then have your regular email client download them one batch at a time. once you've downloaded the first batch to your regular client, copy the next batch that you saved from pine to your spool file again. Lather, Rinse, and repeat 54 times :) it will take a bit of time and work to do this(or use a perl script to sort them as anthony mentioned), but if you're interested in getting those emails, its not a shabby plan ;) good luck, shout if you have probs ;) .djc. Erik Mattheis wrote: > I have a user who's mailbox is 216 MB ... he turned on a vacation > message which got in a feedback loop with a Majordomo list - 55,159 > messages before I noticed it. I downloaded the messages to the iMail > client, intending to filter messages from Majordomo to a mailbox, but it > freezes each time it tries to open it. How can I extract the wanted > messages from the behemoth?