// scorecard · 45/100
verified 1mo agoAgent-readiness23/35
Agent registration (api_key)6/9
Public API5/5
OpenAPI spec0/9
MCP server9/9
llms.txt3/3
Reliability & performance0/15
Actively maintained—
Production-ready0/4
Updated recently—
Pricing12/13
Itemized public pricing6/6
Free tier / trial4/4
Free-tier generosity2/3
Docs & DX2/12
Docs quality—
Public API2/2
Quickstart / examples0/2
Security & compliance4/12
SOC 20/6
ISO 270010/2
GDPR2/2
Security / trust page2/2
Openness4/10
Open source0/6
Open / un-gated API4/4
Company maturity0/3
Company size—
Years operating—
// rankings · cost per standard workload
#13 in Transactional Email$115/ 100k emails
Smallest tier ≥100k = 125k Basic $115/mo
postmarkapp.com/pricing// overview
Postmark is a fast reliable email delivery service using SMTP and API for transactional emails with focus on deliverability speed and inbox placement. It offers message streams templates inbound processing analytics retention and integrations since 2010 for companies of all sizes.
Best for: Transactional email delivery for startups agencies bootstrapped projects and side projects prioritizing deliverability
// pricing
Free tier · generosity 3/5
Includes: 100 emails/month · Test integration
Limits: No overages allowed
Free$0.00 /mo
- 100 emails/month
- Test integration
Basic$15.00 /mo
- 10k emails/mo included
- 45-day retention
- 5 domains
Pro$16.50 /mo
- 10k emails/mo included
- up to 365-day retention
- 10 domains
- Inbound processing
Platform$18.00 /mo
- 10k emails/mo included
- up to 365-day retention
- Unlimited domains
- Inbound processing
// security & compliance
✗ SOC 2✗ ISO 27001✓ GDPR✗ HIPAA
// features
- REST API and SMTP
- Transactional and bulk email
- Message streams
- Email templates and editor
- Inbound email processing
- Analytics retention and webhooks