PostStack

EU-hosted email API for transactional and marketing email, with contacts, broadcasts, and analytics

PostStack publishes 1 API on the APIs.io network. Tagged areas include Email and Public APIs.

🌐 Visit website 📡 Source on GitHub

7.3/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-08-05 · rubric v0.9.1

1 APIs

EmailPublic APIs

Kin Score

Kin Score How this is scored →
scored 2026-08-05 · rubric v0.9.1

Composite quality — 7.3/100 · minimal

Contract Quality 0.0 / 25

Developer Ergonomics 0.0 / 20

Commercial Clarity 1.6 / 20

Operational Transparency 0.0 / 13

Governance 0.0 / 12

Discoverability 5.7 / 10

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/poststack: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 1

Individual APIs this provider publishes, each with its own machine-readable definition.

PostStack

EU-hosted email API for transactional and marketing email, with contacts, broadcasts, and analytics

Security Posture 3

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Poststack Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Poststack Vulnerability Disclosure

security.txt · contact published

SECURITY

Poststack Trust Center

ISO 27001, GDPR

SECURITY

Resources

Access & Security 3

Authentication, authorization, and security posture

TrustCenter

TrustCenter

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Company 1

The organization behind the API

Website

Website

Other 1

Properties that don't map to a standard resource type

PublicAPIsListing

PublicAPIsListing

Source (apis.yml)

aid: poststack
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/poststack.png
name: PostStack
description: EU-hosted email API for transactional and marketing email, with contacts, broadcasts, and analytics
url: https://poststack.dev/docs
specificationVersion: '0.20'
created: '2026-05-28'
modified: '2026-05-28'
x-source: public-apis/public-apis
x-category: Email
x-tier: 3
x-tier-reason: bulk-registered-from-public-apis
tags:
- Email
- Public APIs
apis:
- name: PostStack
  description: EU-hosted email API for transactional and marketing email, with contacts, broadcasts, and analytics
  humanURL: https://poststack.dev/docs
  baseURL: https://poststack.dev/docs
  tags:
  - Email
  properties:
  - type: Documentation
    url: https://poststack.dev/docs
common:
- type: TrustCenter
  url: security/poststack-trust-center.yml
- type: VulnerabilityDisclosure
  url: security/poststack-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/poststack-domain-security.yml
- type: Website
  url: https://poststack.dev/docs
- type: PublicAPIsListing
  url: https://github.com/public-apis/public-apis
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com