Doppler Email Marketing & Automation

Doppler is an email marketing tool developed and supported by Microsoft partner Making Sense, a software company headquartered in San Antonio, TX with offices in Mexico and Argentina. Popular in Latin America, Doppler essentially helps the user organize mailing lists and design emails to suit marketing purposes. It integrates with Google Analytics and supports A/B testing for optimization, offers a drag-and-drop editor and templates for design, and facilitates integrating social networking into email campaigns. A free version is available for contacting a limited number of subscribers, otherwise pricing is tiered according to number of subscribers, on a pre-paid plan for rare usage, or according to volume of emails sent, for a rather large and varying set of options.