What Is an ESP?

Updated on July 23, 2025

Definition

ESPs, or email service providers, are platforms that help businesses manage their email campaigns. These platforms also typically have the tools businesses need to send out their campaigns and analyze them. An ESP simplifies processes like metrics analysis, email design, and list management.

Example

Some examples of the most popular ESPs on the market are Klaviyo, Mailchimp, and ActiveCampaign.

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Features of an ESP

ESPs make it easy for users who are not technically savvy to launch, manage, and analyze an email marketing campaign. Some of the key features a good ESP would have include:

  • Audience segmentation: ability to divide an email list into smaller groups based on shared characteristics, such as demographics, behaviors, or purchase history.
  • Automation workflows: ability to set up automated actions to keep workflows smooth and efficient.
  • Analytics dashboards: ability to showcase results of an email campaign, provide tools for analysis, and, at times, provide smart recommendations on how to optimize email campaigns.

Advanced ESPs also offer integrations with CRM systems and AI-driven personalization tools. For instance, a retail brand using an ESP can segment its audience based on purchase history and send tailored product recommendations to each group. Since product recommendations are personalized through the ESP, the targeted audience will be more likely to engage with the email or purchase a product.

Choosing the Right ESP

The right ESP for a brand depends entirely on its unique needs. Factors like scalability, ease of use, and cost differ per platform, and they need to be weighed by businesses according to what they’re looking for. For example, a startup might prioritize affordability and simplicity, while a larger business may need robust features for complex campaigns.

  • User-Friendly Interface: An intuitive platform simplifies the creation, sending, and management of email campaigns, making it accessible for both beginners and seasoned marketers.
  • Advanced Analytics: Comprehensive analytics provide valuable insights into customer behavior, enabling data-driven decisions to enhance campaign performance.
  • Integration Capabilities: Seamless integration with various e-commerce platforms and third-party applications allows for more personalized and effective marketing strategies.
  • Pricing: Most ESPs require a paid plan for you to access all their features. However, ESPs like Google Workspace cost around $6 per month, while more dynamic and robust ESPs like Klaviyo cost around $20 per month.

Ultimately, the right ESP empowers businesses to manage email marketing effectively. Their goal is to create stronger customer relationships.

Related terms

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