- Starting price
- $15.00/mo
- Pricing
- Free plan
- Website
- postmarkapp.com
About Postmark
Postmark is a fast and reliable email delivery service built for developers to send transactional and marketing emails. It prioritizes inbox delivery and provides a stable API to power email workflows.
Key Features
Developers need predictable timing and clear integration paths when sending transactional messages, while marketing emails require reliable deliverability. Postmark packages those needs into a simple API and focused delivery:
Fast Delivery
Emails reach inboxes quickly, with transactional messages often delivered in under a second.
Deliverability & Inbox Placement
Focus on getting messages into the recipient’s inbox with high deliverability.
Developer-Friendly API
A stable, easy-to-use API designed for developers.
Email Types Supported
Support for transactional and marketing emails.
Summary
Best for engineering, product, and marketing teams that rely on fast, reliable transactional emails and predictable deliverability.
Pricing
View pricingPlans and prices as listed on postmarkapp.com as of Sep 24, 2026.
Free
$0.00/mo / monthly
- 100 emails/month
- No overages allowed
- Testing your integration
- Evaluating Postmark's deliverability
- Side projects with low volume
Basic
$15.00/mo / monthly
- Starting at 10,000 emails/month
- Extra emails @ $1.80 / 1,000
- Industry-leading deliverability rates & speed
- 45-day data retention
- 5 Custom sending domains
- Unlimited emails/day
- Detailed analytics and insights
Pro
$16.50/mo / monthly
- Starting at 10,000 emails/month
- Extra emails @ $1.30 / 1,000
- Industry-leading deliverability rates & speed
- Customizable data retention up to 365 days
- 10 Custom sending domains
- Unlimited emails/day
- Detailed analytics and insights
- Inbound email processing
Platform
$18.00/mo / monthly
- Starting at 10,000 emails/month
- Extra emails @ $1.20 / 1,000
- Industry-leading deliverability rates & speed
- Customizable data retention up to 365 days
- Unlimited Custom sending domains
- Unlimited emails/day
- Detailed analytics and insights
- Inbound email processing
