Q: Can I empty the Trash folder in my GroupWise email client from the handheld?
A: Yes. To empty the Trash folder using the BlackBerry Wireless Handheld,
  1. On your handheld, Click Messages.
  2. Click the trackwheel and click Options.
  3. Click Email Reconciliation. The Email Reconciliation screen appears.
  4. Click the trackwheel and click Purge Deleted Items.