Thank you!
I was able to create that SourceForge user from scratch.
I can't find a repository for TurboGears 1.5 though, so will again post another doc suggestion here:
Upgrading from 1.0 to 1.5:
This is how I updated my turbomail settings from 1.0 to 1.5:
diff a/myapp/config/app.cfg b/myapp/config/app.cfg
mail.on = True
-mail.username = '<username>'
-mail.password = '<password>'
-mail.encoding = 'utf-8-qp'
+mail.transport = 'smtp'
+mail.smtp.username = '<username>'
+mail.smtp.password = '<password>'
+mail.message.encoding = 'utf8'
+mail.utf8qp.on = True
Eoghan