Rt-reminder
Rt-remind.pm is a reminder script that gathers open tickets and emails a summarized list to the ticket owners.
There is an old version on the best practical site which worked for me, but another RT user told me their was a newer version that supported multiple queues.
The latest version which supports multiple queues is at the following link. http://www.cs.kent.ac.uk/people/staff/tdb/rt3/rt-remind
Just place the script in your "./lib/RT" folder, for instance mine is at "/usr/local/rt3/lib/RT".
Set permissions to match your other scripts in the folder. chmod 755 rt-remind.pm
Edit script to match your environment, (ie.. perl, sendmail paths). Run the script on the interval of your choosing using cron or whatever else you may use.
Then wait and see just how many tickets you haven't completed :<)..