The Polacheck Company, a real estate services firm in Milwaukee, has signed on to use LetterMark e-mail software from FullSeven Technologies.

Polacheck is part of the CB Richard Ellis network, a real estate services company that had more than $1 billion in revenues in 2002.

“We immediately recognized the benefit of the LetterMark technology in attracting new business and leveraging an overlooked element of our branding strategy — the thousands of e-mails we send out every day,” said Mark Brickman, chief executive officer of Polacheck, in a statement. “Using the tracking features of LetterMark e-mail, we examined reports immediately after installation and are quite impressed to see so many measurable benefits of the technology.”