Cpanel's documentation is fairly limited on this subject so here is a little tidbit that may help you in your "quest" to install cgi e-mail.
This script is similar to the formail clone, it mails web-based forms to you, but overall, the form that you get in your email inbox is much nicer looking and easier to decypher.
In the case of your web-based forms your action would need to point to
http://yourdomain.com/cgi-bin/cgiecho/file.txt (for testing)
http://yourdomain.com/cgi-bin/cgiemail/file.txt (for going live)
Where "yourdomain.com" is your actual domain, and "file.txt." is your text file used in conjunction with this script.
HINT: The "file.txt shown in the example above would reside in the public_html folder of your website.
More information about cgiemail can be found at the link below:
The cgiemail user guide