Responsys, a premier provider of on-demand email and lifecycle marketing solutions, today announced that JupiterResearch, in its 2005 Email Marketing Buyer's Guide released this week, has ranked Responsys highest overall among high-volume, promotional-oriented email service providers. Leading the pack in both market suitability and overall business value, Responsys was recognized for its ease-of-use and feature-rich functionality, including dynamic content personalization, making the product suitable for both B-to-B and B-to-C marketers.

In this year's email service provider evaluation, JupiterResearch conducted a comprehensive review of the top 30 email service providers across nearly 40 different product attributes. Each vendor was evaluated in the following categories: client references, product demo, financial stability, services expertise, application features such as usability and functionality, partnerships, and technology integration. In the high-volume promotional category, in which the analyst firm ranked vendors whose clients averaged more than 150,000 email messages per send, Responsys was the clear leader.

Find out more about the email marketing solution from Responsys at http://www.marketwire.com/mw/release_html_b1?release_id=98500.