Postmark is an email delivery service that enables developers to send, manage, and monitor transactional and marketing emails via APIs and web-based tools.
Postmark is an email delivery service designed to ensure fast, reliable sending of transactional and marketing emails. It focuses on getting critical messagesβsuch as password resets, order confirmations, and notificationsβdelivered to the inbox quickly and consistently. The platform is built for developers and product teams that need robust APIs, clear visibility into message performance, and strong deliverability without unnecessary complexity.
Postmark provides a powerful RESTful API, SMTP support, and official libraries for common programming languages, making integration straightforward for a wide range of applications. It separates transactional and marketing traffic into different message streams and IPs to protect deliverability and maintain clear sending reputations. Features include detailed message event tracking, bounce and spam complaint handling, open and click tracking, and inbound email processing with webhooks for parsing replies. Postmark also offers templates with test and preview tools, link tracking controls, and support for custom metadata to help teams debug and analyze email behavior.
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