Salesforce, MailChimp, dotmailer, iContact and Oracle Responsys earned the designation as leaders in G2 Crowd’s Winter 2015 rankings of email marketing tools. G2's Grid ranks email tools based on customer satisfaction, as well as on market presence. Sixteen companies were ranked in the report. Dotmailer, MailChimp and iContact reigned in the SMB category. MailChimp, Salesforce Marketing Cloud and Constant Contact led in the mid-market category. Salesforce Marketing Cloud and Oracle Responsys won the top spots in the enterprise category.