OK - Check that the variables get replaced in the template
OK - Shorten the names of the template variables
OK - Internationalised using PO files
OK - Enable sending HTML or PLAIN TEXT emails
OK - Options to configure how the mails get sent
OK - Option to give access to the plugin to users that are not administrators

NO - Add %TO_NAME%, %TO_ADDRESS% to template variables

- Email one particular user
- Role manager plugin compatibility?
- Allow users to opt for not recieving the post notifications?

- More language translations