Amazon SES - Scale your business email & marketing messages with Amazon Simple Email Service (SES), a cost-effective and reliable cloud email service. Sign up today.

JangoMail - Description of the software: JangoMail software is a fantastic tracking solution system that many businesses can utilize for their marketing.

Mandrill - Mandrill is a new way for apps to send transactional email. It runs on the delivery infrastructure that powers MailChimp.

Yesmail - Yesmail provides email marketing solutions that integrate mobile, web, and social channels for marketers.

Mailgun - A set of powerful APIs that enable you to send, receive and track email from your app effortlessly whether you use Python, Ruby, PHP, C#, Node.js or Java.

MasterBase - On demand Email Marketing software