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Head-to-Head Specification Audit
Postmark vs Supabase
SaaS Developers · Global
Specification Matrix
| Metric | Postmark | Supabase |
|---|---|---|
| Starting Price | $15/moBetter | $25/mo |
| API Rate Limit | N/A | 500 req/min |
| Target Country | Global | Global |
| Category | Email API | Database & Backend |
| Compliance | GDPR, SOC2 | SOC2, GDPR, HIPAA-Enterprise |
| Hosting Regions | US-East, EU-West | EU-West, US-East, AP-Southeast |
| Native Integrations | 6 listedBetter | 6 listed |
Postmark — Key Specs
- ✓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
Supabase — Key Specs
- ✓PostgreSQL with RLS, Edge Functions, Realtime, Auth, Storage
- ✓pgvector extension: vector similarity search without Pinecone
- ✓SOC 2 Type II, GDPR DPA (EU data residency available)
- ✓Free tier: 500MB database + 2GB storage forever
Frequently Asked Questions
What is cheaper, Postmark or Supabase?+
Postmark starts at $15/mo, which is lower than Supabase at $25/mo.
Which tool is better for compliance — Postmark or Supabase?+
Both support GDPR, SOC2. Supabase additionally supports HIPAA-Enterprise.
Which tool is better suited for Global?+
Postmark is evaluated for SaaS Developers in Global with hosting regions: US-East, EU-West. Supabase has hosting regions: EU-West, US-East, AP-Southeast. For data residency in Global, check each vendor's data processing agreements.
Data last verified: 26 June 2026
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