Tray Helper it's compact award winning application with many features (f/e: email checker, auto mail responder, anti-spam, popup-killer, event reminder and more). There was a new version (3.9) released recently (December 29, 2003) with following changes:

- Added unique feature to TRACK e-mail messages sent from application. Now you can easily check if, when, and how many times recipient opened your message.
- Added feature to change format of date reported in list of e-mails.
- Improved vacation auto-responder - now it's more intelligent.
- General rating rules of e-mail filters can now forward messages to mobile device when total score of e-mail will meet set criteria.
- While composing e-mails it's possible now specify multiple recipients by separating addresses by "," or ";" character.
- Removed few bugs and added some less important features.