Blast4Traffic contains a number of safelist email marketing options. Email over 70 million optin prospects direct every month. A very effective site for email although you can email every 2 days to this list. This company is used by ebay, Amazon, Blockbuster and more.
Business-World List is a growing safelist with over 69000 keen email prospects. This safelist allows you to track your emails and links and post to their classified section. You can email the to safelist every 3 days.
Private Ad Network offers verified double optin leads that are looking for new products and services. You email direct from the web and email to 1000's of fresh leads every single day. Very effective and popular.