ConstantContact

Constant Contact is a web-based mail merging application designed for email marketing, online surveys, and event marketing. The software is great for managing multiple mailing lists, and reaching out to customers, members, or any other group your business needs to contact. Non-profits use the service to send out their online newsletters, and many stores use it send out promotions. Constant Contact also offers deep analytics for users, letting you know how many of your emails are opened, when they’re opened, click-through rates on links, and more. Alternatives include MailChimp and iContact.