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Amazon SES (Simple Email Service) is a transactional email service platform. Amazon SES provides an easy, cost-effective way for you to send and receive from your own email address, domain or web application.

A set of powerful APIs that enables your application to send, receive and track transactional emails effortlessly. Mailgun provides a global infrastructure and industry expertise that helps you get your message across to the right person at the right time. The service is trusted by over 150,000 businesses including giants like Microsoft, MIT, NHL and Lyft.

A transactional email platform from the email service provider MailChimp. Mandrill can be used to send transactional emails from web applications and third-party service. An API is provided by Mandrill that makes it east to integrate your application to the Mandrill platform.

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.

Vertical Response is an email marketing platform used by over 1 million businesses worldwide. VerticalResponse provides all the tools you need to run a successful email marketing campaign. It allows you to create beautiful emails in minutes through its email template builder. That can be sent on the a time of your choice through the automated email sender. Afterwards, Vertical Response lets you closely monitor your campaign with key metrics such as open rates, clicks, devices, locations and more.

ActiveCampaign is an all-in-one marketing platform that gives you email marketing, marketing automation, and CRM in a unified experience. ActiveCampaign allows you to send newsletters and messages targeted to each contact’s interests to make sure that your campaign feels genuine. The CRM provides email and sales automation that is tightly integrated with your email marketing list, where you can manage pipelines and update deals on a customer basis.