Who are the largest US direct mail companies?

According to Printing Impressions, the top 5 Direct Mail Printers (the companies that actually produce and send the mail for brands like GEICO and Bank of America) are:

1. IWCO Direct - Chanhassen, MN

2. Transcontinental Inc - Montreal

3. Vertis Communications - Baltimore, MD

4. QUAD/Graphics - Sussex, WI

5. The Segerdahl Corp - Wheeling, IL