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ConvertKit

SendGrid is an transactional and email marketing platform that provides a developer friendly API. The service is used by over 80,000 developers who in total send over 70 billion emails every month. As a developer you can integrate your application with ease thanks to developer API, while also enjoying the features SendGrid Marketing Campaign. With SendGrid Marketing Campaign you can create email templates, monitor your campaigns and track important statistics such as open rates, link clicks, device usage, and user location.

Mailchimp is an all-in-one integrated marketing platform that gives you the tools and guidance you need to build your brand and make things happen. Mailchimp is used by startups, e-commerce sites, retail sites, and mobile/web applications to grow and manage their email list and connect with customers world-wide. As a user of Mailchimp you can enjoy drag & drop template building, a unified CRM experience and an audience dashboard that can be used to better understand your customers and how to connect with them.

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.

GetResponse is a comprehensive marketing software platform used by many small businesses. GetResponse is an all-in-one tool that includes email template builder, autoresponders and landing pages that can be used to launch effective email marketing campaigns. Businesses user GetResponse to grow their audience, engage with customers, sell their knowledge and boost online sales.

EmailOctopus is an affordable email marketing platform that provides and easy-to-use interface that makes your life as a marketer simpler. With EmailOctopus you can monitor every bounce, click and unsubscribe in your account dashboard as it provides rich reports that makes your email campaigns easy to track and improve.

MailerLite is an email marketing service and tool provider that brings features designed to help users grow subscribers and build stronger relationships. The experience provided by MailerLite is fresh, intuitive, and loved by many of its users. It includes everything from a drag & drop editor for email templates to automation features that can be used to stay connected with your customer-base.