SourceForge hosts mailing list, but can I export the messages to mbox format for migration?
How to export SourceForge mailing list messages to mbox format
sourceforge
You can export any SourceForge mailing list to 'mbox' format by visiting:https://lists.sourceforge.net/mbox/LISTNAMEThis requires authentication via SourceForge before you can proceed. More information at https://sourceforge.net/p/forge/documentation/Mailing%20List%20Archives/Smaller mailing list archives tend to be easily downloadable from any web browser. Larger mailing list archives may timeout, but I've had success still downloading them via commandline tools like wget