Definition
Email Service Provider, a service that sends bulk email on your behalf and handles the sending infrastructure. Examples include Resend, Amazon SES and Mailgun.
Glossary
ESP
Email Service Provider, a service that sends bulk email on your behalf and handles the sending infrastructure. Examples include Resend, Amazon SES and Mailgun.
Related terms
- IP reputationThe reputation of the IP address mail is sent from. Shared IPs pool reputation across senders; dedicated IPs isolate it.
- Reputation GuardianFortitude Send's system that monitors bounces and complaints per domain, provider and inbox, and automatically throttles or pauses sending before reputation is damaged.
- Email deliverabilityWhether your emails reach recipients' inboxes rather than being blocked or sent to spam. It depends on sender reputation, authentication, list quality and content.
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