Aways a secure product (on a scale of one to Outlook) Pegasus had a faithful following world wide, but a small share, and insufficient funding for it to continue.
From the announcement page at http://pmail.com/ David announces
"It has been a privilege to be of service to the Internet Community for such a long period of time — I am only sorry that I am not able to continue doing so."
Always a class act, Harris gave away Pegasus. If you wanted to help fund the development you could buy manuals. His product did not contain any annoying advertising, and handled Pop and Imap elegantly with a simple clear interface.