San Mateo, Calif.—Jigsaw, a provider of user-generated business information and data services, has introduced Email Learning Center, an online resource for e-mail marketers. The Email Learning Center provides best-practices guidelines, CAN-SPAM information and content about optimizing e-mail marketing success. “E-mail is now the most important, cost-effective channel in the media mix for marketers,” said Jigsaw CEO Jim Fowler, in a statement. “Through our new Email Learning Center, we are helping our clients stay on top of ever-changing best practices, and regulations and get the best response rates from the most targeted lists.” Contributing partners in the Email Learning Center include BrightWave Marketing, Marketo, Responsys, VerticalResponse and Zeta Interactive. The center is at Jigsaw's Web site, www.jigsaw.com.