Postmark
Fast, reliable email delivery service for developers.
Customer Happiness Rating
95%
In Business Since
2010
Full Content Search
45 Days
About Postmark
Postmark helps businesses deliver and monitor transactional emails sent from their web applications. Known for its high deliverability rates and speed, it provides detailed analytics, 45 days of full content search, and robust APIs. To protect the reputation of their sending IPs, Postmark separates transactional email traffic from bulk/promotional email through a feature called Message Streams. They offer official client libraries for major programming languages, extensive documentation, and a strong focus on developer experience. The service can be integrated via SMTP or their modern REST API.
Core Features
Message Streams
Separate sending infrastructure for transactional and promotional emails to protect deliverability.
Email Api & Smtp
Flexible integration options for any application stack.
Analytics & Reporting
Detailed open, click, and bounce tracking with a 45-day searchable history.
Inbound Processing
Parse incoming emails and convert them into structured JSON data for your application.
Templates
Create and manage responsive email templates directly within Postmark.
Developer Experience
Official Libraries
Ruby, .NET, PHP, Node.js, Python, and Java.
Authentication
Uses a server token (API Key) for authentication.
Webhooks
Real-time notifications for events like bounces, opens, clicks, and spam complaints.
Sandbox
Provides a testing environment for sending test emails without affecting your reputation.