Mailjet is an easy-to-use all-in-one email delivery service and marketing platform. Over130,000 marketers in 150 countries use Mailjet as their primary email marketing tool. With Mailjet users can manage everything from transactional emails via the Developer API to email marketing campaigns and email template building. The interface provided by Mailjet makes it really easy to monitor your marketing campaigns, and track open-rate, link clicks and customer related metrics.