The free trial version of the software will only export 1000 messages as HTML, total. What it produces is are basic but fairly nice-looking HTML files with 50 messages per page; there's a clickable contents list at the top and the messages underneath. The files are generated with the names HtmlDigest1.html, HtmlDigest2.html, etc. (I can't remember if there was an option to alter the names before the exporter ran.)
You can also export all of the messages as one big text file by choosing the "pipe delimited html" option; that works without any limits in the free trial version. If you change the filename extension to .html instead of .txt afterwards, you can open it in a browser like Chrome or Firefox or whatever. It's a bit ugly, but easily human-readable. (Note: I'm speaking only from my own experience of doing it with the ~2500 messages from my one group.)
no subject
You can also export all of the messages as one big text file by choosing the "pipe delimited html" option; that works without any limits in the free trial version. If you change the filename extension to .html instead of .txt afterwards, you can open it in a browser like Chrome or Firefox or whatever. It's a bit ugly, but easily human-readable. (Note: I'm speaking only from my own experience of doing it with the ~2500 messages from my one group.)