svnmailer is a tool to distribute (by mail) changes to a subversion repository. It's a basic tool to allow a small team of people to track changes to documentation or tools. The configuration allows a lot of flexibility for the simple and complex cases and easily integrates with subversion as a post-commit hook.
With the latest svnmailer (1.08) I noticed that the equal sign (=) in URLs were replaced by =3D. A simple way to avoid this is to add to the defaults section:
mail_transfer_encoding = 8bit