Postmark
Transactional email delivery for apps
Postmark is an email delivery service for sending transactional and marketing emails via API or SMTP.
- for
- Developers and teams needing reliable email delivery.
- pricing
- freemium · free trial
Key features
- Industry-leading deliverability — Ensures emails reach inboxes quickly with vetted IPs and strict spam controls.
- Message Streams — Separates transactional and marketing emails on parallel infrastructures.
- Inbound email processing — Converts inbound emails to JSON and forwards via webhooks.
- Detailed analytics — Provides bounce data, open/link tracking, and activity retention.
- Official SDKs — Libraries for many languages (Node, Python, Ruby, PHP, .NET, etc.) for easy integration.
- Sandbox mode — Test email sending without affecting real recipients.
Use cases
- Send password reset and verification emails for a web app.
- Deliver order confirmation and notification emails in e-commerce.
- Run bulk newsletters while keeping transactional email deliverability separate.
- Process inbound support emails and route them to a ticketing system.
Postmark pricing
- Free$0.00/mo100 emails/month · No overages · Developer plan
- Basic$15.00/mo/month10k emails included · 5 custom domains · 45-day data retention
- Pro$16.50/mo/month10k emails included · 10 custom domains · Inbound email processing · Custom retention up to 365 days
- Platform$18.00/mo/monthUnlimited custom domains · Unlimited servers · Inbound email processing · Unlimited users
Postmark vs alternatives
 Postmark |  SendGrid |  Mailgun |  Twilio | |
|---|---|---|---|---|
| Best for | Fast, reliable transactional email | Email delivery and marketing | Email API with tracking | Multi-channel communications |
| Pricing | Freemium | Subscription | Subscription | Subscription |
| DevHunt upvotes | 0 | 0 | 0 | 0 |
| Launched | — | — | — | — |
- Postmark vs SendGrid: Provides both email delivery and marketing tools, but mixes transactional and marketing streams.
- Postmark vs Mailgun: Offers email sending, receiving and tracking with a different pricing model and no message-stream separation.
- Postmark vs Twilio: Broad communications platform covering SMS, voice, and email, whereas Postmark specializes in email deliverability.
Postmark FAQ
Do you offer a free trial?+
All new accounts start on a free developer plan with 100 emails per month and never expire.
Can I send bulk marketing email through Postmark?+
Yes, using separate Message Streams for marketing to keep deliverability high.
What happens if I exceed my monthly email limit?+
Extra emails are billed at the per-thousand rate specified for each paid plan.
Do you offer dedicated IPs?+
Dedicated IPs are available for high-volume senders on Pro plans or higher, starting at $50 per month.
Do unused emails roll over to the next month?+
No, unused email capacity does not roll over to the next billing period.
Summarized by DevHunt from postmarkapp.com · Oct 1, 2026. Details may change; check the official site.
About this listing
DevHunt lists Postmark because developers expect to find it next to the tools in its category. It did not launch on DevHunt. Work on Postmark? Message us to claim this listing.
-(1).png?auto=compress&fit=max&w=64)
