We use an intraweb wiki to document some of our files. Because often after modifying and committing these files, programmers forgot to update the according wiki page, I wanted to be able to send reminder mails to the one who modified the file. In other words I needed to be able to send mails to the committer (as far as I understand the documentation of subversion-notify, right now it is only possible to hardcode mail receivers in the configuration file).
So I downloaded the code and added support for custom format tokens also for mail addresses. I've attached my changes as a patch file if you want to integrate the changes in some future release.
So you can now write, for instance
<EMailGroup Name="Developers">
<EMail Address="#user#@myserver,com" />
<EMail Address="boss.always@myserver.com" />
</EMailGroup>
Just to be clear: of course we don't send emails whenever some files get changed :-) This feature is only used for 3 files (out of thousands), using a different mail template per file.
Support tokens in mail addresses