This is a Highly Secured Data mail client for those who wants to be untraceable and stealth. It's amazing and it works. Your ISP is unable to hook your mails with this protocol. IP-HSD contains incredible functions such as SLOTS and many more functions. I found IP-HSD on SourceForge but you can download this new mail client on www.islands-data.com (the editor). It's free and you create your account in the software. Don't need to send your name, you remain totally anonymous. The flip side of the coin: your contacts must use IP-HSD too for their secured mails because Outlook, thunderbird.. and others are unable to use this encrypted protocol. Your ISP won't see you in the net. I tried it and i use it for my high privacy mails. I also use my Outlook for everyday mails. The website contains many tutos about this. Try it and tell us what you think. Cheers.