Mailblast - Email marketing on a budget using Amazon SES
Kingmailer - Kingmailer helps you send, receive and route/forward emails.
GetResponse - Email marketing from GetResponse. Send email newsletters, campaigns, online surveys and follow-up autoresponders. Simple, easy interface. FREE sign up.
Flexmail Solution - Professional email marketing with powerful and easy-to-use features
Sendy - Sendy is a self hosted newsletter app that sends emails 100x cheaper via Amazon SES
Dragon Responsive Email Designer - Dragon Email Designer provides an intuitive drag and drop newsletter design tool.