Sendportal is a free, open-source email marketing application for sending newsletters and campaigns through your own sending infrastructure, such as Amazon SES. It suits businesses that want lower-cost email marketing with full control over their data and sending platform, rather than relying entirely on a hosted marketing service. What is Sendportal? Sendportal is a self-hosted email marketing application. You install it on your own hosting account or server, then connect it to an email delivery provider such as Amazon SES, Mailgun, SendGrid, Postmark or Mailjet. It gives you a central interface for managing subscribers, creating campaigns, building templates and reviewing...