Application email delivery with separate transactional and broadcast streams.
What is Postmark?
Postmark delivers application email using message-volume plans. Transactional and marketing traffic are separated into Message Streams. That separation lets an application send different kinds of email through the same provider while keeping their delivery streams distinct.
Monthly allowances count more than outbound messages to one recipient. Inbound, test, CC, and BCC messages also contribute to usage. Paid plans can use overages, while the small Developer plan has a fixed monthly allowance.
Official details: https://postmarkapp.com/pricing/ ; https://postmarkapp.com/support/article/1107-how-does-monthly-pricing-work
Pricing: A free Developer allowance and paid monthly delivery plans are available. Paid overages and additional recipients contribute to the bill. Pricing checked October 26, 2026.
Features
- Transactional email delivery
- Broadcast Message Streams
- Inbound email
- Monthly volume plans
FAQs
Common questions about Postmark
Do test and inbound emails count?
Can I mix transactional and marketing emails?
Insights
Traffic and momentum for Postmark
What are alternatives to Postmark?
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