If you're on a UNIX machine, here's a tar/gzipped file:
Download from souper108.tgz (107 k) and the PGP signature
If you're on an MS Windows machine, here's a zipped file:
Download from souper108.zip (110 k) and the PGP signature
Both sets of users should download the example files that go with Soupermail from here:
examples.zip (91 k)
To verify the archives, my PGP key is available from http://wwwkeys.pgp.net:11371/pks/lookup?op=index&search=vittal.aithal%40bigfoot.com
Once you've downloaded Soupermail, follow these installation instructions to get up and running.
Soupermail's free under the GNU General Public Licence, so use it (almost) wherever you want. I wouldn't mind if you tell me about where its being used so I can get a nice warm, fuzzy feeling, especially if you let me link to your site and if you provide some nice words of encouragement.