follow.it - follow.it gets publishers more followers & recurring traffic, and provides a better reading experience for followers
ActiveCampaign - Integrated email marketing, marketing automation, and small business CRM. Send beautiful newsletters, setup behavioral based automations, and benefit from sales automation.
Feedly - The content you need to accelerate your research, marketing, and sales.
GatorMail - GatorMail is an email marketing platform from the communicator, founded in 2006 which features the ability to launch dynamic and mobile accessible email campaigns.
Feedio - Feedio helps bloggers manage and grow their email and RSS subscribers.
Constant Contact - Constant Contact offers email marketing, social media marketing, online survey, event marketing, digital storefronts, and local deals tools.