MailerLite - Affordable Email Marketing Software. Get all features (Segmentation, Automation, A/B testing) for up to 1,000 subscribers & send unlimited emails for free!
Sendy - Sendy is a self hosted newsletter app that sends emails 100x cheaper via Amazon SES
GetResponse - Email marketing from GetResponse. Send email newsletters, campaigns, online surveys and follow-up autoresponders. Simple, easy interface. FREE sign up.
phpList - phpList is an email and newsletter marketing tool.
SendPulse - Maximizing e-mail marketing open rates automatically
MailKitchen - Mailkitchen is an Email Marketing platform for creating Newsletters and Bulk emails.