Postmark
About Postmark
Postmark is a fast and reliable email delivery service for developers, providing a simple API to send transactional and marketing emails. The company specializes in software development, offering features like stellar deliverability, promotional and transactional email separation, and great support. Founded in 2010, Postmark serves companies of all sizes, including Paddle, Indie Hackers, and UNICEF. Its headquarters is located in Chicago, Illinois.
Why Notable
Transactional email service known for industry-leading delivery speed (average under 10 seconds). Acquired by ActiveCampaign (2022). Publishes real-time system status and delivery metrics publicly. Message Streams feature separates transactional and broadcast sending.
