← Glossary
ESP (Email Service Provider)
The platform that sends, stores, and manages your email list and campaigns.
An Email Service Provider (ESP) is the software platform that handles email delivery infrastructure, subscriber management, automation, and analytics. Examples include InfluencersKit, Beehiiv, Kit, Mailchimp, and Substack. Creator-focused ESPs differ from legacy business ESPs by offering paid newsletter subscriptions, programmatic ads, and sponsorship tools natively. Choosing the right ESP affects your fees, monetisation options, and long-term list portability.