AWeber
AWeber is a market leader in small business email marketing software. One of their biggest claims is that they invented the autoresponder, which is no small thing.
Founded in 1998, the company has over 20 years of proven success helping more than one million customers around the world reliably connect with their prospects and customers through powerfully-simple email marketing software.
It provides support for mobile-friendly HTML email newsletters, autoresponder campaigns, subscriber segmentation and management, RSS-to-email features, signup forms for websites or blogs, and more.
AWeber works with more than 1000 partner software solutions, allowing customers to integrate with the apps and services they rely on.