Domania.com, boston, has announced its portfolio runooff prevention product, PortfolioProtect, for lenders and mortgage banks. PortfolioProtect consists of personalized, content-based, subscription-only e-mail messages that are sent by Domania.com's behavioral modeling tool after it identifies visitors who are ready to buy, refinance or prepay a mortgage. Domania.com reports that consumers are responding to its online direct marketing program at a arate of 15 to 40 percent.