Tray Helper is distributed in two different forms:

• SUPREME (shareware) - free to use for the first 30 days after installation. This version has a number of cool features not available on the Freeware version. But you have to either register it or remove it from your computer after the evaluation period.
• BASIC (freeware) - you're free to use this version. There is no time limit but many cool features are disabled.

If you're new to Tray Helper, I recommend you try the SUPREME version first. Since first 30 days of use are free, there is no risk to you and you can take advantage of trialling many more features than in the FREEWARE version.

Here is list of differences between the two versions:

Feature:	BASIC (freeware)	SUPREME (shareware)
THOnline Ability to use THOnline service:	YES	YES
E-mail module Number of supported e-mail accounts:	5	100
E-mail module Auto-responder availability:	YES	YES
E-mail module Mail filters availability:	NO	YES
E-mail module Ability to send e-mails with emoticons:	YES	YES
Built in e-mail reader Attachments support:	YES	YES
Built in e-mail sender Windows address book support:	YES	YES
Reminder module Forwarding reminders to mobile device:	NO	YES
Reminder module Calendar availability:	LIMITED (*)	YES
Plugins Max number of plugins enabled in the same time:	1	10
MS Agent Notification via MS Agent characters about new mail, reminders etc.:	YES	YES
MS Agent Reading e-mails aloud using MS Agent characters:	NO	YES
Cost	FREE	19.99 USD FREE to try for 30 days
Download page	HERE	HERE

*	Calendar only for current year is available and it's not possible to view details of event or task.

Ready to download ? Click here !
Here is some info about registering shareware version.