This program sends daily, weekly and monthly e-mail reports from Redmine. It formats them nicely into HTML and sends a pretty e-mail with a table.
It pulls data directly from the Redmine database using SQL.
It should be configured on the server running redmine using cronjobs. Unfortunately, I don't have a setup script ready, maybe it will be implemented in the future.
The script was used in the past for inside usage in a company, so it's not well documented or entirely finished.
It's up to you to figure out how it works. All scripts have useful comments.
(it's in polish, sorry)
Use at your own risk.