BenchMail
http://benchmail.co/Get to know your subscribers to improve your e-mail marketing
BenchMail helps you improve your e-mail marketing by focusing on people 'behind' the e-mail addresses. It provides metrics to uncover their behavior and preferences and identify the most influential subscribers. Its benchmarked data will give you insights to how well you're performing in relation to the industry (and your competitors!) Integration with the most well-known email marketing service providers is supported. (MailChimp, CampaignMonitor, AWeber, MadMimi)
Member count: 1-10