Active Campaign is a comprehensive marketing platform that helps you automate email campaign strategies and create targeted campaigns to send out.
AWeber is an all-in-one marketing solution specializing in email marketing. Their web-based tools help businesses grow by staying in touch with customers and prospects.
GetResponse is known as one of the best email marketing platforms to help you keep in touch with your customers, create sign-ups, funnels, autoresponders and more.
GrooveMail autoresponder and CRM is a world-class email marketing customer relationship manager that allows you to do so much more than just send emails.