The programs provided here in the contrib directory are taken from various places on the net. Sometimes I even don't know where I found them and the license may also be unclear. If the creator of one of the scripts doesn't like to see it included in this contrib section, let me know and I'll remove it from the package. I have never used any of the scripts here so I really don't know how they work or whether there are better ways to complete a task. I've been told that there are better tools to migrate from UW-IMAP. So be warned, use at your own risk.