Download of TopMail 2.0 was on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. This tool was originally developed by IIPwr.com. The most popular versions among TopMail users are 2.0 and 1.0. The default filename for the program's installer is TopMail.exe. We recommend checking the downloaded files with any free antivirus. TopMail lies within Communication Tools, more precisely E-mail Tools.
From the developer:
TopMail is an email client that lets you send anonymous emails from any email address to any email address. All you need is to be online, you don't need to have an email account. With TopMail you can instantly send out emails that appear to arrive from any email address or name you want. TopMail can also auto detect an SMTP server to send the emails thru making the 'send' process as simple as possible.
You may want to check out more software, such as 4Team Duplicate Killer, Caretaker Antispam or Personal Mail Server Pro, which might be related to TopMail.