It should run on any OS supported by Python.
Email is also welcome.
If you fix bugs or modify the program, please inform me so that I can make a new release with your modifications. Since we used PMail, we had to convert the stored mail in some other format which could be read by our new mailserver. We found two other programs on the net, but both have several drawbacks and bugs. Since we had to convert some 100 MBs, I started to write my own converter. Regular expressions are very handy for manipulating text on a rather high level.