Postmark
Transactional ESP
Focused transactional email service known for exceptional deliverability and speed.
Postmark is laser-focused on transactional email and it shows. They consistently deliver the fastest inbox placement times in the industry, with emails arriving in seconds rather than minutes. Their strict anti-spam policies mean shared IPs maintain excellent reputation.
The trade-off is that Postmark intentionally does not support bulk marketing email. If you need both transactional and marketing from one platform, you will need a second service.
Pros
- •Industry-best deliverability
- •Fastest delivery times
- •Clean, focused product
- •Excellent documentation
Cons
- •No marketing email support
- •Smaller feature set
- •Higher per-email cost
- •No drag-and-drop editor
Features
Community Reviews (3)
Fastest delivery I've measured
We instrumented our transactional emails with timing headers. Postmark consistently delivers in under 3 seconds. Nothing else comes close for speed.
Best for transactional, nothing else
If you only need transactional email, Postmark is incredible. But the moment you need a marketing email, you need a second platform.
Speed and reliability you can measure
We instrumented delivery times across 3 ESPs. Postmark consistently delivered in 1-2 seconds while others averaged 5-8 seconds. For password resets and OTP codes this matters enormously to user experience.