The 1.0 version of LightMail is available as a free download on our website. The most popular version of the software 1.0. This program is a product of fairlite consulting. The program's installer file is generally known as LightMail.exe. LightMail is included in Communication Tools.
From the developer:
Using Lightmail, you may send mail to one or more recipients, sending either plain text messages or messages with one or more attachments, with configurable subjects, directly from inside another program, or from the command line interface. The purpose of Lightmail is to provide an easy way for programs to send files that they generate, via email, with an absolute minimum of fuss and coding involved.
You may want to check out more software, such as GnuPG-Pack Basics Version or Sperry Software - Hide Fax Numbers, which might be related to LightMail.