Head-to-Head Specification Audit
WorkOS vs Postmark
Enterprise Authentication Platform · Global
Specification Matrix
| Metric | WorkOS | Postmark |
|---|---|---|
| Starting Price | $0/moBetter | $15/mo |
| API Rate Limit | 200 req/min | Not confirmed |
| Target Country | Global | Global |
| Category | Auth & Identity | Email API |
| Compliance (vendor-stated) | SOC2, GDPR, ISO27001 | GDPR, SOC2 |
| Hosting Regions | US-East, EU-West | US-East, EU-West |
| Native Integrations | 5 listed | 6 listedBetter |
WorkOS — Key Specs
Vendor-stated- ✓Enterprise SSO, Directory Sync, MFA — ship enterprise features in days
- ✓SOC 2 Type II certified, GDPR DPA included
- ✓SCIM provisioning to 100+ identity providers
- ✓Free for first 1M MAU — best deal in enterprise auth
Postmark — Key Specs
Vendor-stated- ✓Average delivery time of 3.2 seconds — fastest transactional delivery benchmarked
- ✓Message Streams separate transactional from bulk email — protects domain reputation
- ✓GDPR-compliant EU-only sending available for EU data residency requirements
- ✓10-year email storage and retrieval via Message Retention add-on
Frequently Asked Questions
Which is lower-priced, WorkOS or Postmark?+
WorkOS starts at Free plan available, which is lower than Postmark at $15/mo. Verify current pricing on each vendor's website.
Which compliance frameworks do WorkOS and Postmark list?+
Both list SOC2, GDPR in their vendor documentation. WorkOS additionally lists ISO27001. These are vendor-stated frameworks. VektorIndex has not independently audited these claims.
Which has a higher documented API rate limit — WorkOS or Postmark?+
Available information does not support a direct comparison of API rate limits for these tools. Check each vendor's developer documentation.
Which data hosting regions do WorkOS and Postmark support?+
WorkOS lists hosting regions: US-East, EU-West. Postmark lists hosting regions: US-East, EU-West. For data residency requirements in Global, confirm exact region configuration directly with each vendor.
Data last updated: 29 August 2026 — Sourced from official vendor documentation. Not independently audited. Report incorrect information
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