Email marketing terms

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Email Service Provider (ESP)

ESP is an acronym for a service that enables marketers to send out email marketing campaigns to a list of users.


Campaign Monitor is an ESP that hosts email marketing services for more than 2 million people and more than 150,000 businesses around the world. As an ESP, our services include the ability for users to: Create and build email subscriber lists, customize email templates, send emails, provide reporting and analytics on campaigns, test for compatibility with email inboxes, add personalization and dynamic content, and much more.

Mailchimp and Constant Contact are other leading ESP’s, and an exploration of alternatives to Mailchimp is a popular subject among email marketers.

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