Postmark
Work on Postmark? Verify this listing (free)Transactional email delivery
Transactional email delivery service focused on speed and deliverability, with REST API and SMTP, separate message streams for transactional vs broadcast, templates and inbound processing.
Best for: Apps that need reliable, fast transactional email with a long deliverability track record
Visit Postmark ↗- Pricing
- Free 100 emails/mo; Basic from $15/mo (10,000 emails); Pro from $16.50/mo
- Free tier
- Yes: 100 emails/mo on free Developer plan (does not expire)
- Open source
- No
- Last verified
- 2026-10-25
Postmark pricing breakdown, history and cheaper alternatives →
Score breakdown
- Fit for the use case22 / 25
- Vibe-coder friendliness10 / 15
- Output quality & reliability15 / 15
- Pricing & free tier9 / 15
- Ecosystem & integrations8 / 10
- Momentum7 / 10
- Code ownership & lock-in5 / 10
Why this score: Best-in-class transactional deliverability since 2010 and clear docs. Free tier is tiny (100/mo) and DX is less React-native than Resend.
Based on desk research of official pricing pages and docs; see methodology.
FAQ
- Is Postmark free?
- Postmark free tier: Yes: 100 emails/mo on free Developer plan (does not expire). Paid pricing: Free 100 emails/mo; Basic from $15/mo (10,000 emails); Pro from $16.50/mo.
- What is Postmark pricing in 2026?
- Postmark pricing (as of our last verification on 2026-10-25): Free 100 emails/mo; Basic from $15/mo (10,000 emails); Pro from $16.50/mo. Always confirm on the official site — plans change.
- Is Postmark open source?
- No. Postmark is not open source.
- What is Postmark's PromptToProd score?
- Postmark scores 76/100 on PromptToProd (fit, vibe-coder friendliness, quality, pricing, ecosystem, momentum, ownership). See the score breakdown on this page and our methodology.
- What is Postmark best for?
- Postmark is best for: Apps that need reliable, fast transactional email with a long deliverability track record.
- When was Postmark last verified on PromptToProd?
- Pricing and details for Postmark were last verified on 2026-10-25 from official docs and pricing pages.
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