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.

Publicate - Build Beautiful Emails. Export and Send Anywhere.

SendPulse - Maximizing e-mail marketing open rates automatically

Revue - The easiest way to create and send a curated newsletter