The bulk emailer program allows you to send the same email
to a long list of people. Unlike competing products, it does
not require you to run any code on your ISP's server.
The price includes customising the program to your needs.
For more detail see the manual at
http://mindprod.com/applications/bulkmanual.html
To install, Extract the zip download with WinZip, available from
http://www.winzip.com (or similar unzip utility) into any
directory you please, often C:\ -- ticking off the "user
folder names" option.
You will have to modify the CustConfig.java file, recompile,
and rebuild the jar.  Only programmers will feel comfortable
doing this. Most people should contact me at
inquiry@mindprod.com for help in configuring and installing.
You need to copy the *.bat files to a directory on the path.
Basically, you send an email to a little-used account, with an attachment
of email addresses you want the email broadcast to.  Then you let Bulk retrieve
the email and relay a copy of it to each of the recipients.
To use this product you will need two different email accounts,
one for sending your emails and one for relaying them to
your list of recipients.