It's easy and it works slick. The names and addresses are in a csd (comma separated data) file. A cover page file is made up that the fax program automagically fills in with the address data for each transmission.

At my suggestion (to keep transmission fast and the customers happy) the advertising data (a list of recent arrivals (exotic metals)) is the cover page, so it's a one page transmission.

The software we use, Keller Group's PM/Fax is also available for Linux. Keller has recently sold the product line to CDS which will continue development and marketing. The product page is at [link|http://www.kellergroup.com/prodinfo/pmfaxlinux.html|CDS/Keller]. This is a great program and also acts as the office fax server with sales people faxing from the desktop all day long through a single modem.

The client originally used WinFax Pro, but PMFax can get out at least three times as many faxes per night, and WinFax uses a proprietary data format for the addresses which made it a lot harder to use.

Some customers called up asking to be taken off the fax list, but the transmission has been well received by most and has generated a lot of business. [link|http://www.aaxnet.com/product/cli_hightemp.html|Company description here].