http://www.softpedia.com/get/Internet/E-mail/Mail-U tilities/PopTray.shtml
Softpedia guarantees that PopTray 3.2 Final is 100% FREE, which means it is a freeware product (both for personal and commercial use) that does not contain any form of malware, including but not limited to: spyware, viruses, trojans and backdoors.

http://www.slunecnice.cz/sw/poptray/
Programy na Slunečnici jsou bez virů a spyware.

http://www.snapfiles.com/get/poptray.html
PopTray - email notification tool
clean software PopTray does not contain any adware or spyware.