Head-to-Head Specification Audit
Tenable One vs Postmark
Enterprise Security Operations · Global
Specification Matrix
| Metric | Tenable One | Postmark |
|---|---|---|
| Starting Price | Custom pricing | $15/mo |
| API Rate Limit | 300 req/min | Not confirmed |
| Target Country | Global | Global |
| Category | NIS2 Cybersecurity Compliance | Email API |
| Compliance (vendor-stated) | NIS2, DORA, ISO 27001, SOC2, CIS Controls, NIST CSF | GDPR, SOC2 |
| Hosting Regions | US-East, EU-West, AP-Southeast | US-East, EU-West |
| Native Integrations | 5 listed | 6 listedBetter |
Tenable One — Key Specs
Vendor-stated- ✓44,000+ customers globally — largest vulnerability management install base
- ✓Covers OT/ICS systems — critical for NIS2 essential services
- ✓AI-powered attack path analysis predicts what attackers will target next
- ✓Pre-built NIS2 and DORA compliance dashboards
- ✓Integrates with 200+ security tools
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, Tenable One or Postmark?+
Tenable One uses custom pricing. Postmark starts at $15/mo. Contact Tenable One directly for a quote.
Which compliance frameworks do Tenable One and Postmark list?+
Both list SOC2 in their vendor documentation. Tenable One additionally lists NIS2, DORA, ISO 27001, CIS Controls, NIST CSF. Postmark additionally lists GDPR. These are vendor-stated frameworks. VektorIndex has not independently audited these claims.
Which has a higher documented API rate limit — Tenable One 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 Tenable One and Postmark support?+
Tenable One lists hosting regions: US-East, EU-West, AP-Southeast. 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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