Glossary: Email service provider (ESP)

What is an Email service provider (ESP)?

An email service provider (ESP) is a company that offers email services. Email (marketing) services come in all shapes and sizes. So Email Service Provider is a pretty broad definition. Luckily there are some categories.

E-mail marketing platform

In common language an ESP is a company that helps you to send E-mail marketing messages by offering an e-mail marketing platform or e-mailtool. There are many companies that offer self-service email marketing platforms.

Functionalities of these platforms differ, but the most basic functionalities include:

  • Create e-mail templates and/or the use pre-made templates
  • Maintain a subscriber list, which is uploaded by the user for distributing messages.
  • Send e-mail, which allows users to distribute their message to the subscribers
  • See statistics and reports of e-mailcampaigns and individual e-mail to measure the success of the campaigns

Agency style Email Service Providers

Next to offering an e-mail marketing platform, many agency-style email service providers also offer additional services like creation, consultancy, training, etc. These agencies are known as full-service ESPs. Some only work with their own or one specific platform, others will work with multiple platforms or on the clients’ own e-mail marketing platform. While these agencies are called full-service, many of them allow their clients to pick the services they want ‘a la carte’ and do the rest in-house or with help of another company.

Additional email marketing services

Next to the email marketing platform and the agency style services, there are many additional services in the e-mail marketing that would justify the label ‘ESP’.

  • Deliverability services
  • List broking
  • Mail transfer Agents (MTA)
  • Rendering test platforms
  • White listing services
  • (Inbox) monitoring
  • CRM and survey tools
  • Campaign management software

About Jordie van Rijn


Jordie van Rijn is an independent email marketing consultant at www.emailmonday.com. He specializes in smart email marketing, event-driven campaigns and vendor selection. As a consultant, Jordie will help you get the most out of your email marketing efforts.

  • Shawmac_80

    i am having problems receiving emails from facebook…wht should i do???