The way I have done this is to save each thread in two formats - one suitable for importing into the Voyager email program, and one suitable for importing into Marcel (I hope!). Both should be okay for importing into Pluto - but which one you download should be based on which format Pluto is set up to read. There is also a plain text version for those who aren't using an Acorn computer (or using an Acorn, but not one of said mail readers.) Note: I have not archived these files - they are on the web site as plain text.