Customized header lines
The mailer provides a facility for including customized header lines in the messages you send. If you have an
.elm/elmheaders file, the mailer will include its contents immediately after the regular headers of all outbound
mail. The mailer supports use of the backquote convention in this file. Here's a typical .elm/elmheaders file.
Organization: Hewlett-Packard Laboratories
Phone: (415)-555-1234
Operating System: `uname -srv`
These lines will appear after all other header lines in the message.