Postmark website screenshot

Postmark

Postmark is an email delivery service that helps businesses send and track transactional and broadcast email reliably, replacing SMTP with a scalable service that surfaces detailed delivery analytics, bounce tracking, open and click tracking, and dedicated IP addresses.

Postmark publishes 47 APIs on the APIs.io network, including Activate API, Alias API, Batch API, and 44 more. Tagged areas include Emails, Messaging, Transactional Email, Deliverability, and SMTP.

The Postmark catalog on APIs.io includes 1 event-driven AsyncAPI specification and 2 Spectral governance rulesets.

Postmark’s developer surface includes documentation, getting-started guide, pricing, signup flow, engineering blog, support, changelog, and 12 more developer resources.

🌐 Visit website 📡 Source on GitHub
50.7/100 developing ▼ -7.1 Agent 45/100 agent ready Full breakdown ↓
scored 2026-07-28 · rubric v0.6
AccessFreemium
47 APIs 6 Agent Skills 16 Features
EmailsMessagingTransactional EmailDeliverabilitySMTP

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 50.7/100 · developing
Contract Quality 14.8 / 25
Developer Ergonomics 5.2 / 20
Commercial Clarity 16.8 / 20
Operational Transparency 7.5 / 13
Governance 5.0 / 12
Discoverability 6.9 / 10
Agent readiness — 45/100 · agent ready
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
MCP Server 0 / 12
Machine-Readable Auth 0 / 10
Idempotency 0 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 7 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 6 / 6
Agent Skills 5 / 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/postmark: 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 47

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

Postmark Activate API

The Activate API from Postmark — 1 operation(s) for activate.

Postmark Alias API

The Alias API from Postmark — 1 operation(s) for alias.

Postmark Batch API

The Batch API from Postmark — 2 operation(s) for batch.

Postmark Bounceid API

The Bounceid API from Postmark — 3 operation(s) for bounceid.

Postmark Bounces API API

The Bounces API API from Postmark — 5 operation(s) for bounces api.

Postmark Bounces API

The Bounces API from Postmark — 2 operation(s) for bounces.

Postmark Browser Families API

The Browser Families API from Postmark — 1 operation(s) for browser families.

Postmark Bypass API

The Bypass API from Postmark — 1 operation(s) for bypass.

Postmark Deliverystats API

The Deliverystats API from Postmark — 1 operation(s) for deliverystats.

Postmark Domains API API

The Domains API API from Postmark — 6 operation(s) for domains api.

Postmark Dump API

The Dump API from Postmark — 2 operation(s) for dump.

Postmark Email API

The Email API from Postmark — 4 operation(s) for email.

Postmark Emailclients API

The Emailclients API from Postmark — 1 operation(s) for emailclients.

Postmark Inbound API

The Inbound API from Postmark — 4 operation(s) for inbound.

Postmark Inbound Rules API API

The Inbound Rules API API from Postmark — 2 operation(s) for inbound rules api.

Postmark Locations API

The Locations API from Postmark — 1 operation(s) for locations.

Postmark Message Identifier API

The Message Identifier API from Postmark — 2 operation(s) for message identifier.

Postmark Messages API API

The Messages API API from Postmark — 11 operation(s) for messages api.

Postmark Messages API

The Messages API from Postmark — 11 operation(s) for messages.

Postmark Messages > Inbound > {Messageid} API

The Messages > Inbound > {Messageid} API from Postmark — 1 operation(s) for messages > inbound > {messageid}.

Postmark Messages > Outbound > Clicks API

The Messages > Outbound > Clicks API from Postmark — 1 operation(s) for messages > outbound > clicks.

Postmark Messages > Outbound > {Messageid} API

The Messages > Outbound > {Messageid} API from Postmark — 1 operation(s) for messages > outbound > {messageid}.

Postmark Messages > Outbound > Opens API

The Messages > Outbound > Opens API from Postmark — 1 operation(s) for messages > outbound > opens.

Postmark Outbound API

The Outbound API from Postmark — 20 operation(s) for outbound.

Postmark Platforms API

The Platforms API from Postmark — 2 operation(s) for platforms.

Postmark Readtimes API

The Readtimes API from Postmark — 1 operation(s) for readtimes.

Postmark Retry API

The Retry API from Postmark — 1 operation(s) for retry.

Postmark Sender Signatures API API

The Sender Signatures API API from Postmark — 5 operation(s) for sender signatures api.

Postmark Sending API API

The Sending API API from Postmark — 4 operation(s) for sending api.

Postmark Sends API

The Sends API from Postmark — 1 operation(s) for sends.

Postmark Server Configuration API API

The Server Configuration API API from Postmark — 1 operation(s) for server configuration api.

Postmark Server Management API API

The Server Management API API from Postmark — 2 operation(s) for server management api.

Postmark Servers API

The Servers API from Postmark — 1 operation(s) for servers.

Postmark Spam API

The Spam API from Postmark — 1 operation(s) for spam.

Postmark Statistics API

The Statistics API from Postmark — 13 operation(s) for statistics.

Postmark Stats API API

The Stats API API from Postmark — 12 operation(s) for stats api.

Postmark Stats/Outbound API

The Stats/Outbound API from Postmark — 2 operation(s) for stats/outbound.

Postmark Stats/Outbound > Clicks API

The Stats/Outbound > Clicks API from Postmark — 1 operation(s) for stats/outbound > clicks.

Postmark Stats/Outbound > Opens API

The Stats/Outbound > Opens API from Postmark — 1 operation(s) for stats/outbound > opens.

Postmark Template API

The Template API from Postmark — 2 operation(s) for template.

Postmark Templates API API

The Templates API API from Postmark — 6 operation(s) for templates api.

Postmark Templates API

The Templates API from Postmark — 4 operation(s) for templates.

Postmark Triggerid API

The Triggerid API from Postmark — 1 operation(s) for triggerid.

Postmark Triggers API

The Triggers API from Postmark — 4 operation(s) for triggers.

Postmark Triggers > Inboundrules API

The Triggers > Inboundrules API from Postmark — 1 operation(s) for triggers > inboundrules.

Postmark Triggers > Tags API

The Triggers > Tags API from Postmark — 1 operation(s) for triggers > tags.

Postmark Validate API

The Validate API from Postmark — 1 operation(s) for validate.

Scroll for all 47

Open Collections 1

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

Postmark API

OPEN COLLECTION

Agent Skills 6

Packaged agent skills for driving this provider's APIs from an AI assistant.

postmark-email-best-practices

AGENT SKILL

postmark-inbound

AGENT SKILL

postmark-send-email

AGENT SKILL

postmark-templates

AGENT SKILL

postmark-webhooks

AGENT SKILL

postmark

AGENT SKILL

GraphQL 1

GraphQL schemas published by this provider.

Postmark GraphQL Schema

This document describes a conceptual GraphQL schema for the Postmark transactional email API. Postmark provides a REST API for sending and tracking transactional and broadcast e...

GRAPHQL

Pricing Plans 1

Published pricing tiers and plan structures.

Postmark Plans Pricing

4 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Postmark Rate Limits

2 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Postmark Finops

FINOPS

Features 16

Notable capabilities this provider offers.

Free: 100 emails/month
Basic: $15/mo for 10K emails
Pro: $16.50/mo for 10K emails with templates and webhooks
Platform: $18/mo for 10K emails with multiple servers and dedicated IPs
Email API and SMTP server
Templates with versioning (Pro+)
Webhooks for delivery, bounce, open, click, spam, subscription events
Bounce and spam complaint handling
Server tokens for per-environment isolation
Send up to 500 emails per batch request
Inbound email parsing
Message Streams (broadcast vs transactional)
OpenTracker beacon for opens/clicks
Suppression management
Dedicated IPs (Platform)
Best-in-class deliverability

Scroll for all 16

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Postmark Webhooks

AsyncAPI description of Postmark's outbound webhook surface. Postmark delivers event notifications by issuing HTTP POST requests with a JSON body to a URL the customer configure...

ASYNCAPI

Spectral Rules 2

Spectral governance rulesets for linting and validating these APIs.

Postmark API Rules

8 rules · 1 errors 7 warnings

SPECTRAL

Postmark API Rules

5 rules · 4 warnings 1 info

SPECTRAL

JSON Schema 19

Standalone JSON Schema definitions for this provider's data models.

CreateServerPayload

14 properties

JSON SCHEMA

DKIMRotationResponse

12 properties

JSON SCHEMA

DomainCreationModel

2 properties

JSON SCHEMA

DomainEditingModel

1 properties

JSON SCHEMA

DomainExtendedInformation

18 properties

JSON SCHEMA

DomainInformation

6 properties

JSON SCHEMA

DomainListingResults

2 properties

JSON SCHEMA

DomainSPFResult

3 properties

JSON SCHEMA

EditServerPayload

14 properties

JSON SCHEMA

ExtendedServerInfo

19 properties

JSON SCHEMA

SenderListingResults

2 properties

JSON SCHEMA

SenderSignatureCreationModel

4 properties

JSON SCHEMA

SenderSignatureEditingModel

3 properties

JSON SCHEMA

SenderSignatureExtendedInformation

22 properties

JSON SCHEMA

SenderSignatureInformation

6 properties

JSON SCHEMA

ServerListingResponse

2 properties

JSON SCHEMA

StandardPostmarkResponse

2 properties

JSON SCHEMA

TemplatesPushModel

3 properties

JSON SCHEMA

TemplatesPushResponse

2 properties

JSON SCHEMA

Scroll for all 19

JSON Structure 1

JSON Structure definitions describing this provider's data shapes.

Postmark Structure

0 properties

JSON STRUCTURE

Security Posture 1

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

Postmark Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Postmark Agentic Access

108 operations · 42 acting

108 operations · 42 acting

AGENTIC

Resources

Get Started 3

Portal, sign-up, and the first successful call

GettingStarted
GettingStarted
 Signup
Signup
 Login
Login

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess
 AgentSkills
AgentSkills

Build 1

SDKs, sample code, and the tooling you integrate with

GitHub
GitHub

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Operate 3

Status, limits, changes, and where to get help

Support
Support
 StatusPage
StatusPage
 ChangeLog
ChangeLog

Commercial 3

Pricing, plans, and the legal terms of use

Pricing
Pricing
 TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy

Company 4

The organization behind the API

Website
Website
 Blog
Blog
 Twitter
Twitter
 LinkedIn
LinkedIn

Other 1

Properties that don't map to a standard resource type

Templates
Templates

Source (apis.yml)

apis.yml Raw ↑ 
aid: postmark
name: Postmark
description: Postmark is an email delivery service that helps businesses send and track transactional and broadcast email
  reliably, replacing SMTP with a scalable service that surfaces detailed delivery analytics, bounce tracking, open and click
  tracking, and dedicated IP addresses.
type: Index
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/postmark.png
url: https://raw.githubusercontent.com/api-evangelist/postmark/refs/heads/main/apis.yml
tags:
- Emails
- Messaging
- Transactional Email
- Deliverability
- SMTP
created: '2024-04-14'
modified: '2026-05-30'
specificationVersion: '0.19'
apis:
- aid: postmark:postmark-activate-api
  name: Postmark Activate API
  description: The Activate API from Postmark — 1 operation(s) for activate.
  humanURL: https://postmarkapp.com/developer
  baseURL: https://api.postmarkapp.com
  tags:
  - Activate
  properties:
  - type: OpenAPI
    url: openapi/postmark-activate-api-openapi.yml
  - type: Documentation
    url: https://postmarkapp.com/developer
  - type: GettingStarted
    url: https://postmarkapp.com/developer/api/overview
  - type: Authentication
    url: https://postmarkapp.com/developer/api/overview#authentication
  - type: AsyncAPI
    url: asyncapi/postmark-webhooks-asyncapi.yml
  - type: GraphQL
    url: graphql/postmark-graphql.md
- aid: postmark:postmark-alias-api
  name: Postmark Alias API
  description: The Alias API from Postmark — 1 operation(s) for alias.
  humanURL: https://postmarkapp.com/developer
  baseURL: https://api.postmarkapp.com
  tags:
  - Alias
  properties:
  - type: OpenAPI
    url: openapi/postmark-alias-api-openapi.yml
  - type: Documentation
    url: https://postmarkapp.com/developer
  - type: GettingStarted
    url: https://postmarkapp.com/developer/api/overview
  - type: Authentication
    url: https://postmarkapp.com/developer/api/overview#authentication
  - type: AsyncAPI
    url: asyncapi/postmark-webhooks-asyncapi.yml
  - type: GraphQL
    url: graphql/postmark-graphql.md
- aid: postmark:postmark-batch-api
  name: Postmark Batch API
  description: The Batch API from Postmark — 2 operation(s) for batch.
  humanURL: https://postmarkapp.com/developer
  baseURL: https://api.postmarkapp.com
  tags:
  - Batch
  properties:
  - type: OpenAPI
    url: openapi/postmark-batch-api-openapi.yml
  - type: Documentation
    url: https://postmarkapp.com/developer
  - type: GettingStarted
    url: https://postmarkapp.com/developer/api/overview
  - type: Authentication
    url: https://postmarkapp.com/developer/api/overview#authentication
  - type: AsyncAPI
    url: asyncapi/postmark-webhooks-asyncapi.yml
  - type: GraphQL
    url: graphql/postmark-graphql.md
- aid: postmark:postmark-bounceid-api
  name: Postmark Bounceid API
  description: The Bounceid API from Postmark — 3 operation(s) for bounceid.
  humanURL: https://postmarkapp.com/developer
  baseURL: https://api.postmarkapp.com
  tags:
  - Bounceid
  properties:
  - type: OpenAPI
    url: openapi/postmark-bounceid-api-openapi.yml
  - type: Documentation
    url: https://postmarkapp.com/developer
  - type: GettingStarted
    url: https://postmarkapp.com/developer/api/overview
  - type: Authentication
    url: https://postmarkapp.com/developer/api/overview#authentication
  - type: AsyncAPI
    url: asyncapi/postmark-webhooks-asyncapi.yml
  - type: GraphQL
    url: graphql/postmark-graphql.md
- aid: postmark:postmark-bounces-api-api
  name: Postmark Bounces API API
  description: The Bounces API API from Postmark — 5 operation(s) for bounces api.
  humanURL: https://postmarkapp.com/developer
  baseURL: https://api.postmarkapp.com
  tags:
  - Bounces API
  properties:
  - type: OpenAPI
    url: openapi/postmark-bounces-api-api-openapi.yml
  - type: Documentation
    url: https://postmarkapp.com/developer
  - type: GettingStarted
    url: https://postmarkapp.com/developer/api/overview
  - type: Authentication
    url: https://postmarkapp.com/developer/api/overview#authentication
  - type: AsyncAPI
    url: asyncapi/postmark-webhooks-asyncapi.yml
  - type: GraphQL
    url: graphql/postmark-graphql.md
- aid: postmark:postmark-bounces-api
  name: Postmark Bounces API
  description: The Bounces API from Postmark — 2 operation(s) for bounces.
  humanURL: https://postmarkapp.com/developer
  baseURL: https://api.postmarkapp.com
  tags:
  - Bounces
  properties:
  - type: OpenAPI
    url: openapi/postmark-bounces-api-openapi.yml
  - type: Documentation
    url: https://postmarkapp.com/developer
  - type: GettingStarted
    url: https://postmarkapp.com/developer/api/overview
  - type: Authentication
    url: https://postmarkapp.com/developer/api/overview#authentication
  - type: AsyncAPI
    url: asyncapi/postmark-webhooks-asyncapi.yml
  - type: GraphQL
    url: graphql/postmark-graphql.md
- aid: postmark:postmark-browser-families-api
  name: Postmark Browser Families API
  description: The Browser Families API from Postmark — 1 operation(s) for browser families.
  humanURL: https://postmarkapp.com/developer
  baseURL: https://api.postmarkapp.com
  tags:
  - Browser Families
  properties:
  - type: OpenAPI
    url: openapi/postmark-browser-families-api-openapi.yml
  - type: Documentation
    url: https://postmarkapp.com/developer
  - type: GettingStarted
    url: https://postmarkapp.com/developer/api/overview
  - type: Authentication
    url: https://postmarkapp.com/developer/api/overview#authentication
  - type: AsyncAPI
    url: asyncapi/postmark-webhooks-asyncapi.yml
  - type: GraphQL
    url: graphql/postmark-graphql.md
- aid: postmark:postmark-bypass-api
  name: Postmark Bypass API
  description: The Bypass API from Postmark — 1 operation(s) for bypass.
  humanURL: https://postmarkapp.com/developer
  baseURL: https://api.postmarkapp.com
  tags:
  - Bypass
  properties:
  - type: OpenAPI
    url: openapi/postmark-bypass-api-openapi.yml
  - type: Documentation
    url: https://postmarkapp.com/developer
  - type: GettingStarted
    url: https://postmarkapp.com/developer/api/overview
  - type: Authentication
    url: https://postmarkapp.com/developer/api/overview#authentication
  - type: AsyncAPI
    url: asyncapi/postmark-webhooks-asyncapi.yml
  - type: GraphQL
    url: graphql/postmark-graphql.md
- aid: postmark:postmark-deliverystats-api
  name: Postmark Deliverystats API
  description: The Deliverystats API from Postmark — 1 operation(s) for deliverystats.
  humanURL: https://postmarkapp.com/developer
  baseURL: https://api.postmarkapp.com
  tags:
  - Deliverystats
  properties:
  - type: OpenAPI
    url: openapi/postmark-deliverystats-api-openapi.yml
  - type: Documentation
    url: https://postmarkapp.com/developer
  - type: GettingStarted
    url: https://postmarkapp.com/developer/api/overview
  - type: Authentication
    url: https://postmarkapp.com/developer/api/overview#authentication
  - type: AsyncAPI
    url: asyncapi/postmark-webhooks-asyncapi.yml
  - type: GraphQL
    url: graphql/postmark-graphql.md
- aid: postmark:postmark-domains-api-api
  name: Postmark Domains API API
  description: The Domains API API from Postmark — 6 operation(s) for domains api.
  humanURL: https://postmarkapp.com/developer
  baseURL: https://api.postmarkapp.com
  tags:
  - Domains API
  properties:
  - type: OpenAPI
    url: openapi/postmark-domains-api-api-openapi.yml
  - type: Documentation
    url: https://postmarkapp.com/developer
  - type: GettingStarted
    url: https://postmarkapp.com/developer/api/overview
  - type: Authentication
    url: https://postmarkapp.com/developer/api/overview#authentication
  - type: AsyncAPI
    url: asyncapi/postmark-webhooks-asyncapi.yml
  - type: GraphQL
    url: graphql/postmark-graphql.md
- aid: postmark:postmark-dump-api
  name: Postmark Dump API
  description: The Dump API from Postmark — 2 operation(s) for dump.
  humanURL: https://postmarkapp.com/developer
  baseURL: https://api.postmarkapp.com
  tags:
  - Dump
  properties:
  - type: OpenAPI
    url: openapi/postmark-dump-api-openapi.yml
  - type: Documentation
    url: https://postmarkapp.com/developer
  - type: GettingStarted
    url: https://postmarkapp.com/developer/api/overview
  - type: Authentication
    url: https://postmarkapp.com/developer/api/overview#authentication
  - type: AsyncAPI
    url: asyncapi/postmark-webhooks-asyncapi.yml
  - type: GraphQL
    url: graphql/postmark-graphql.md
- aid: postmark:postmark-email-api
  name: Postmark Email API
  description: The Email API from Postmark — 4 operation(s) for email.
  humanURL: https://postmarkapp.com/developer
  baseURL: https://api.postmarkapp.com
  tags:
  - Email
  properties:
  - type: OpenAPI
    url: openapi/postmark-email-api-openapi.yml
  - type: Documentation
    url: https://postmarkapp.com/developer
  - type: GettingStarted
    url: https://postmarkapp.com/developer/api/overview
  - type: Authentication
    url: https://postmarkapp.com/developer/api/overview#authentication
  - type: AsyncAPI
    url: asyncapi/postmark-webhooks-asyncapi.yml
  - type: GraphQL
    url: graphql/postmark-graphql.md
- aid: postmark:postmark-emailclients-api
  name: Postmark Emailclients API
  description: The Emailclients API from Postmark — 1 operation(s) for emailclients.
  humanURL: https://postmarkapp.com/developer
  baseURL: https://api.postmarkapp.com
  tags:
  - Emailclients
  properties:
  - type: OpenAPI
    url: openapi/postmark-emailclients-api-openapi.yml
  - type: Documentation
    url: https://postmarkapp.com/developer
  - type: GettingStarted
    url: https://postmarkapp.com/developer/api/overview
  - type: Authentication
    url: https://postmarkapp.com/developer/api/overview#authentication
  - type: AsyncAPI
    url: asyncapi/postmark-webhooks-asyncapi.yml
  - type: GraphQL
    url: graphql/postmark-graphql.md
- aid: postmark:postmark-inbound-api
  name: Postmark Inbound API
  description: The Inbound API from Postmark — 4 operation(s) for inbound.
  humanURL: https://postmarkapp.com/developer
  baseURL: https://api.postmarkapp.com
  tags:
  - Inbound
  properties:
  - type: OpenAPI
    url: openapi/postmark-inbound-api-openapi.yml
  - type: Documentation
    url: https://postmarkapp.com/developer
  - type: GettingStarted
    url: https://postmarkapp.com/developer/api/overview
  - type: Authentication
    url: https://postmarkapp.com/developer/api/overview#authentication
  - type: AsyncAPI
    url: asyncapi/postmark-webhooks-asyncapi.yml
  - type: GraphQL
    url: graphql/postmark-graphql.md
- aid: postmark:postmark-inbound-rules-api-api
  name: Postmark Inbound Rules API API
  description: The Inbound Rules API API from Postmark — 2 operation(s) for inbound rules api.
  humanURL: https://postmarkapp.com/developer
  baseURL: https://api.postmarkapp.com
  tags:
  - Inbound Rules API
  properties:
  - type: OpenAPI
    url: openapi/postmark-inbound-rules-api-api-openapi.yml
  - type: Documentation
    url: https://postmarkapp.com/developer
  - type: GettingStarted
    url: https://postmarkapp.com/developer/api/overview
  - type: Authentication
    url: https://postmarkapp.com/developer/api/overview#authentication
  - type: AsyncAPI
    url: asyncapi/postmark-webhooks-asyncapi.yml
  - type: GraphQL
    url: graphql/postmark-graphql.md
- aid: postmark:postmark-locations-api
  name: Postmark Locations API
  description: The Locations API from Postmark — 1 operation(s) for locations.
  humanURL: https://postmarkapp.com/developer
  baseURL: https://api.postmarkapp.com
  tags:
  - Locations
  properties:
  - type: OpenAPI
    url: openapi/postmark-locations-api-openapi.yml
  - type: Documentation
    url: https://postmarkapp.com/developer
  - type: GettingStarted
    url: https://postmarkapp.com/developer/api/overview
  - type: Authentication
    url: https://postmarkapp.com/developer/api/overview#authentication
  - type: AsyncAPI
    url: asyncapi/postmark-webhooks-asyncapi.yml
  - type: GraphQL
    url: graphql/postmark-graphql.md
- aid: postmark:postmark-message-identifier-api
  name: Postmark Message Identifier API
  description: The Message Identifier API from Postmark — 2 operation(s) for message identifier.
  humanURL: https://postmarkapp.com/developer
  baseURL: https://api.postmarkapp.com
  tags:
  - Message Identifier
  properties:
  - type: OpenAPI
    url: openapi/postmark-message-identifier-api-openapi.yml
  - type: Documentation
    url: https://postmarkapp.com/developer
  - type: GettingStarted
    url: https://postmarkapp.com/developer/api/overview
  - type: Authentication
    url: https://postmarkapp.com/developer/api/overview#authentication
  - type: AsyncAPI
    url: asyncapi/postmark-webhooks-asyncapi.yml
  - type: GraphQL
    url: graphql/postmark-graphql.md
- aid: postmark:postmark-messages-api-api
  name: Postmark Messages API API
  description: The Messages API API from Postmark — 11 operation(s) for messages api.
  humanURL: https://postmarkapp.com/developer
  baseURL: https://api.postmarkapp.com
  tags:
  - Messages API
  properties:
  - type: OpenAPI
    url: openapi/postmark-messages-api-api-openapi.yml
  - type: Documentation
    url: https://postmarkapp.com/developer
  - type: GettingStarted
    url: https://postmarkapp.com/developer/api/overview
  - type: Authentication
    url: https://postmarkapp.com/developer/api/overview#authentication
  - type: AsyncAPI
    url: asyncapi/postmark-webhooks-asyncapi.yml
  - type: GraphQL
    url: graphql/postmark-graphql.md
- aid: postmark:postmark-messages-api
  name: Postmark Messages API
  description: The Messages API from Postmark — 11 operation(s) for messages.
  humanURL: https://postmarkapp.com/developer
  baseURL: https://api.postmarkapp.com
  tags:
  - Messages
  properties:
  - type: OpenAPI
    url: openapi/postmark-messages-api-openapi.yml
  - type: Documentation
    url: https://postmarkapp.com/developer
  - type: GettingStarted
    url: https://postmarkapp.com/developer/api/overview
  - type: Authentication
    url: https://postmarkapp.com/developer/api/overview#authentication
  - type: AsyncAPI
    url: asyncapi/postmark-webhooks-asyncapi.yml
  - type: GraphQL
    url: graphql/postmark-graphql.md
- aid: postmark:postmark-messages-inbound-messageid-api
  name: Postmark Messages > Inbound > {Messageid} API
  description: The Messages > Inbound > {Messageid} API from Postmark — 1 operation(s) for messages > inbound > {messageid}.
  humanURL: https://postmarkapp.com/developer
  baseURL: https://api.postmarkapp.com
  tags:
  - Messages > Inbound > {Messageid}
  properties:
  - type: OpenAPI
    url: openapi/postmark-messages-inbound-messageid-api-openapi.yml
  - type: Documentation
    url: https://postmarkapp.com/developer
  - type: GettingStarted
    url: https://postmarkapp.com/developer/api/overview
  - type: Authentication
    url: https://postmarkapp.com/developer/api/overview#authentication
  - type: AsyncAPI
    url: asyncapi/postmark-webhooks-asyncapi.yml
  - type: GraphQL
    url: graphql/postmark-graphql.md
- aid: postmark:postmark-messages-outbound-clicks-api
  name: Postmark Messages > Outbound > Clicks API
  description: The Messages > Outbound > Clicks API from Postmark — 1 operation(s) for messages > outbound > clicks.
  humanURL: https://postmarkapp.com/developer
  baseURL: https://api.postmarkapp.com
  tags:
  - Messages > Outbound > Clicks
  properties:
  - type: OpenAPI
    url: openapi/postmark-messages-outbound-clicks-api-openapi.yml
  - type: Documentation
    url: https://postmarkapp.com/developer
  - type: GettingStarted
    url: https://postmarkapp.com/developer/api/overview
  - type: Authentication
    url: https://postmarkapp.com/developer/api/overview#authentication
  - type: AsyncAPI
    url: asyncapi/postmark-webhooks-asyncapi.yml
  - type: GraphQL
    url: graphql/postmark-graphql.md
- aid: postmark:postmark-messages-outbound-messageid-api
  name: Postmark Messages > Outbound > {Messageid} API
  description: The Messages > Outbound > {Messageid} API from Postmark — 1 operation(s) for messages > outbound > {messageid}.
  humanURL: https://postmarkapp.com/developer
  baseURL: https://api.postmarkapp.com
  tags:
  - Messages > Outbound > {Messageid}
  properties:
  - type: OpenAPI
    url: openapi/postmark-messages-outbound-messageid-api-openapi.yml
  - type: Documentation
    url: https://postmarkapp.com/developer
  - type: GettingStarted
    url: https://postmarkapp.com/developer/api/overview
  - type: Authentication
    url: https://postmarkapp.com/developer/api/overview#authentication
  - type: AsyncAPI
    url: asyncapi/postmark-webhooks-asyncapi.yml
  - type: GraphQL
    url: graphql/postmark-graphql.md
- aid: postmark:postmark-messages-outbound-opens-api
  name: Postmark Messages > Outbound > Opens API
  description: The Messages > Outbound > Opens API from Postmark — 1 operation(s) for messages > outbound > opens.
  humanURL: https://postmarkapp.com/developer
  baseURL: https://api.postmarkapp.com
  tags:
  - Messages > Outbound > Opens
  properties:
  - type: OpenAPI
    url: openapi/postmark-messages-outbound-opens-api-openapi.yml
  - type: Documentation
    url: https://postmarkapp.com/developer
  - type: GettingStarted
    url: https://postmarkapp.com/developer/api/overview
  - type: Authentication
    url: https://postmarkapp.com/developer/api/overview#authentication
  - type: AsyncAPI
    url: asyncapi/postmark-webhooks-asyncapi.yml
  - type: GraphQL
    url: graphql/postmark-graphql.md
- aid: postmark:postmark-outbound-api
  name: Postmark Outbound API
  description: The Outbound API from Postmark — 20 operation(s) for outbound.
  humanURL: https://postmarkapp.com/developer
  baseURL: https://api.postmarkapp.com
  tags:
  - Outbound
  properties:
  - type: OpenAPI
    url: openapi/postmark-outbound-api-openapi.yml
  - type: Documentation
    url: https://postmarkapp.com/developer
  - type: GettingStarted
    url: https://postmarkapp.com/developer/api/overview
  - type: Authentication
    url: https://postmarkapp.com/developer/api/overview#authentication
  - type: AsyncAPI
    url: asyncapi/postmark-webhooks-asyncapi.yml
  - type: GraphQL
    url: graphql/postmark-graphql.md
- aid: postmark:postmark-platforms-api
  name: Postmark Platforms API
  description: The Platforms API from Postmark — 2 operation(s) for platforms.
  humanURL: https://postmarkapp.com/developer
  baseURL: https://api.postmarkapp.com
  tags:
  - Platforms
  properties:
  - type: OpenAPI
    url: openapi/postmark-platforms-api-openapi.yml
  - type: Documentation
    url: https://postmarkapp.com/developer
  - type: GettingStarted
    url: https://postmarkapp.com/developer/api/overview
  - type: Authentication
    url: https://postmarkapp.com/developer/api/overview#authentication
  - type: AsyncAPI
    url: asyncapi/postmark-webhooks-asyncapi.yml
  - type: GraphQL
    url: graphql/postmark-graphql.md
- aid: postmark:postmark-readtimes-api
  name: Postmark Readtimes API
  description: The Readtimes API from Postmark — 1 operation(s) for readtimes.
  humanURL: https://postmarkapp.com/developer
  baseURL: https://api.postmarkapp.com
  tags:
  - Readtimes
  properties:
  - type: OpenAPI
    url: openapi/postmark-readtimes-api-openapi.yml
  - type: Documentation
    url: https://postmarkapp.com/developer
  - type: GettingStarted
    url: https://postmarkapp.com/developer/api/overview
  - type: Authentication
    url: https://postmarkapp.com/developer/api/overview#authentication
  - type: AsyncAPI
    url: asyncapi/postmark-webhooks-asyncapi.yml
  - type: GraphQL
    url: graphql/postmark-graphql.md
- aid: postmark:postmark-retry-api
  name: Postmark Retry API
  description: The Retry API from Postmark — 1 operation(s) for retry.
  humanURL: https://postmarkapp.com/developer
  baseURL: https://api.postmarkapp.com
  tags:
  - Retry
  properties:
  - type: OpenAPI
    url: openapi/postmark-retry-api-openapi.yml
  - type: Documentation
    url: https://postmarkapp.com/developer
  - type: GettingStarted
    url: https://postmarkapp.com/developer/api/overview
  - type: Authentication
    url: https://postmarkapp.com/developer/api/overview#authentication
  - type: AsyncAPI
    url: asyncapi/postmark-webhooks-asyncapi.yml
  - type: GraphQL
    url: graphql/postmark-graphql.md
- aid: postmark:postmark-sender-signatures-api-api
  name: Postmark Sender Signatures API API
  description: The Sender Signatures API API from Postmark — 5 operation(s) for sender signatures api.
  humanURL: https://postmarkapp.com/developer
  baseURL: https://api.postmarkapp.com
  tags:
  - Sender Signatures API
  properties:
  - type: OpenAPI
    url: openapi/postmark-sender-signatures-api-api-openapi.yml
  - type: Documentation
    url: https://postmarkapp.com/developer
  - type: GettingStarted
    url: https://postmarkapp.com/developer/api/overview
  - type: Authentication
    url: https://postmarkapp.com/developer/api/overview#authentication
  - type: AsyncAPI
    url: asyncapi/postmark-webhooks-asyncapi.yml
  - type: GraphQL
    url: graphql/postmark-graphql.md
- aid: postmark:postmark-sending-api-api
  name: Postmark Sending API API
  description: The Sending API API from Postmark — 4 operation(s) for sending api.
  humanURL: https://postmarkapp.com/developer
  baseURL: https://api.postmarkapp.com
  tags:
  - Sending API
  properties:
  - type: OpenAPI
    url: openapi/postmark-sending-api-api-openapi.yml
  - type: Documentation
    url: https://postmarkapp.com/developer
  - type: GettingStarted
    url: https://postmarkapp.com/developer/api/overview
  - type: Authentication
    url: https://postmarkapp.com/developer/api/overview#authentication
  - type: AsyncAPI
    url: asyncapi/postmark-webhooks-asyncapi.yml
  - type: GraphQL
    url: graphql/postmark-graphql.md
- aid: postmark:postmark-sends-api
  name: Postmark Sends API
  description: The Sends API from Postmark — 1 operation(s) for sends.
  humanURL: https://postmarkapp.com/developer
  baseURL: https://api.postmarkapp.com
  tags:
  - Sends
  properties:
  - type: OpenAPI
    url: openapi/postmark-sends-api-openapi.yml
  - type: Documentation
    url: https://postmarkapp.com/developer
  - type: GettingStarted
    url: https://postmarkapp.com/developer/api/overview
  - type: Authentication
    url: https://postmarkapp.com/developer/api/overview#authentication
  - type: AsyncAPI
    url: asyncapi/postmark-webhooks-asyncapi.yml
  - type: GraphQL
    url: graphql/postmark-graphql.md
- aid: postmark:postmark-server-configuration-api-api
  name: Postmark Server Configuration API API
  description: The Server Configuration API API from Postmark — 1 operation(s) for server configuration api.
  humanURL: https://postmarkapp.com/developer
  baseURL: https://api.postmarkapp.com
  tags:
  - Server Configuration API
  properties:
  - type: OpenAPI
    url: openapi/postmark-server-configuration-api-api-openapi.yml
  - type: Documentation
    url: https://postmarkapp.com/developer
  - type: GettingStarted
    url: https://postmarkapp.com/developer/api/overview
  - type: Authentication
    url: https://postmarkapp.com/developer/api/overview#authentication
  - type: AsyncAPI
    url: asyncapi/postmark-webhooks-asyncapi.yml
  - type: GraphQL
    url: graphql/postmark-graphql.md
- aid: postmark:postmark-server-management-api-api
  name: Postmark Server Management API API
  description: The Server Management API API from Postmark — 2 operation(s) for server management api.
  humanURL: https://postmarkapp.com/developer
  baseURL: https://api.postmarkapp.com
  tags:
  - Server Management API
  properties:
  - type: OpenAPI
    url: openapi/postmark-server-management-api-api-openapi.yml
  - type: Documentation
    url: https://postmarkapp.com/developer
  - type: GettingStarted
    url: https://postmarkapp.com/developer/api/overview
  - type: Authentication
    url: https://postmarkapp.com/developer/api/overview#authentication
  - type: AsyncAPI
    url: asyncapi/postmark-webhooks-asyncapi.yml
  - type: GraphQL
    url: graphql/postmark-graphql.md
- aid: postmark:postmark-servers-api
  name: Postmark Servers API
  description: The Servers API from Postmark — 1 operation(s) for servers.
  humanURL: https://postmarkapp.com/developer
  baseURL: https://api.postmarkapp.com
  tags:
  - Servers
  properties:
  - type: OpenAPI
    url: openapi/postmark-servers-api-openapi.yml
  - type: Documentation
    url: https://postmarkapp.com/developer
  - type: GettingStarted
    url: https://postmarkapp.com/developer/api/overview
  - type: Authentication
    url: https://postmarkapp.com/developer/api/overview#authentication
  - type: AsyncAPI
    url: asyncapi/postmark-webhooks-asyncapi.yml
  - type: GraphQL
    url: graphql/postmark-graphql.md
- aid: postmark:postmark-spam-api
  name: Postmark Spam API
  description: The Spam API from Postmark — 1 operation(s) for spam.
  humanURL: https://postmarkapp.com/developer
  baseURL: https://api.postmarkapp.com
  tags:
  - Spam
  properties:
  - type: OpenAPI
    url: openapi/postmark-spam-api-openapi.yml
  - type: Documentation
    url: https://postmarkapp.com/developer
  - type: GettingStarted
    url: https://postmarkapp.com/developer/api/overview
  - type: Authentication
    url: https://postmarkapp.com/developer/api/overview#authentication
  - type: AsyncAPI
    url: asyncapi/postmark-webhooks-asyncapi.yml
  - type: GraphQL
    url: graphql/postmark-graphql.md
- aid: postmark:postmark-statistics-api
  name: Postmark Statistics API
  description: The Statistics API from Postmark — 13 operation(s) for statistics.
  humanURL: https://postmarkapp.com/developer
  baseURL: https://api.postmarkapp.com
  tags:
  - Statistics
  properties:
  - type: OpenAPI
    url: openapi/postmark-statistics-api-openapi.yml
  - type: Documentation
    url: https://postmarkapp.com/developer
  - type: GettingStarted
    url: https://postmarkapp.com/developer/api/overview
  - type: Authentication
    url: https://postmarkapp.com/developer/api/overview#authentication
  - type: AsyncAPI
    url: asyncapi/postmark-webhooks-asyncapi.yml
  - type: GraphQL
    url: graphql/postmark-graphql.md
- aid: postmark:postmark-stats-api-api
  name: Postmark Stats API API
  description: The Stats API API from Postmark — 12 operation(s) for stats api.
  humanURL: https://postmarkapp.com/developer
  baseURL: https://api.postmarkapp.com
  tags:
  - Stats API
  properties:
  - type: OpenAPI
    url: openapi/postmark-stats-api-api-openapi.yml
  - type: Documentation
    url: https://postmarkapp.com/developer
  - type: GettingStarted
    url: https://postmarkapp.com/developer/api/overview
  - type: Authentication
    url: https://postmarkapp.com/developer/api/overview#authentication
  - type: AsyncAPI
    url: asyncapi/postmark-webhooks-asyncapi.yml
  - type: GraphQL
    url: graphql/postmark-graphql.md
- aid: postmark:postmark-stats-outbound-api
  name: Postmark Stats/Outbound API
  description: The Stats/Outbound API from Postmark — 2 operation(s) for stats/outbound.
  humanURL: https://postmarkapp.com/developer
  baseURL: https://api.postmarkapp.com
  tags:
  - Stats/Outbound
  properties:
  - type: OpenAPI
    url: openapi/postmark-stats-outbound-api-openapi.yml
  - type: Documentation
    url: https://postmarkapp.com/developer
  - type: GettingStarted
    url: https://postmarkapp.com/developer/api/overview
  - type: Authentication
    url: https://postmarkapp.com/developer/api/overview#authentication
  - type: AsyncAPI
    url: asyncapi/postmark-webhooks-asyncapi.yml
  - type: GraphQL
    url: graphql/postmark-graphql.md
- aid: postmark:postmark-stats-outbound-clicks-api
  name: Postmark Stats/Outbound > Clicks API
  description: The Stats/Outbound > Clicks API from Postmark — 1 operation(s) for stats/outbound > clicks.
  humanURL: https://postmarkapp.com/developer
  baseURL: https://api.postmarkapp.com
  tags:
  - Stats/Outbound > Clicks
  properties:
  - type: OpenAPI
    url: openapi/postmark-stats-outbound-clicks-api-openapi.yml
  - type: Documentation
    url: https://postmarkapp.com/developer
  - type: GettingStarted
    url: https://postmarkapp.com/developer/api/overview
  - type: Authentication
    url: https://postmarkapp.com/developer/api/overview#authentication
  - type: AsyncAPI
    url: asyncapi/postmark-webhooks-asyncapi.yml
  - type: GraphQL
    url: graphql/postmark-graphql.md
- aid: postmark:postmark-stats-outbound-opens-api
  name: Postmark Stats/Outbound > Opens API
  description: The Stats/Outbound > Opens API from Postmark — 1 operation(s) for stats/outbound > opens.
  humanURL: https://postmarkapp.com/developer
  baseURL: https://api.postmarkapp.com
  tags:
  - Stats/Outbound > Opens
  properties:
  - type: OpenAPI
    url: openapi/postmark-stats-outbound-opens-api-openapi.yml
  - type: Documentation
    url: https://postmarkapp.com/developer
  - type: GettingStarted
    url: https://postmarkapp.com/developer/api/overview
  - type: Authentication
    url: https://postmarkapp.com/developer/api/overview#authentication
  - type: AsyncAPI
    url: asyncapi/postmark-webhooks-asyncapi.yml
  - type: GraphQL
    url: graphql/postmark-graphql.md
- aid: postmark:postmark-template-api
  name: Postmark Template API
  description: The Template API from Postmark — 2 operation(s) for template.
  humanURL: https://postmarkapp.com/developer
  baseURL: https://api.postmarkapp.com
  tags:
  - Template
  properties:
  - type: OpenAPI
    url: openapi/postmark-template-api-openapi.yml
  - type: Documentation
    url: https://postmarkapp.com/developer
  - type: GettingStarted
    url: https://postmarkapp.com/developer/api/overview
  - type: Authentication
    url: https://postmarkapp.com/developer/api/overview#authentication
  - type: AsyncAPI
    url: asyncapi/postmark-webhooks-asyncapi.yml
  - type: GraphQL
    url: graphql/postmark-graphql.md
- aid: postmark:postmark-templates-api-api
  name: Postmark Templates API API
  description: The Templates API API from Postmark — 6 operation(s) for templates api.
  humanURL: https://postmarkapp.com/developer
  baseURL: https://api.postmarkapp.com
  tags:
  - Templates API
  properties:
  - type: OpenAPI
    url: openapi/postmark-templates-api-api-openapi.yml
  - type: Documentation
    url: https://postmarkapp.com/developer
  - type: GettingStarted
    url: https://postmarkapp.com/developer/api/overview
  - type: Authentication
    url: https://postmarkapp.com/developer/api/overview#authentication
  - type: AsyncAPI
    url: asyncapi/postmark-webhooks-asyncapi.yml
  - type: GraphQL
    url: graphql/postmark-graphql.md
- aid: postmark:postmark-templates-api
  name: Postmark Templates API
  description: The Templates API from Postmark — 4 operation(s) for templates.
  humanURL: https://postmarkapp.com/developer
  baseURL: https://api.postmarkapp.com
  tags:
  - Templates
  properties:
  - type: OpenAPI
    url: openapi/postmark-templates-api-openapi.yml
  - type: Documentation
    url: https://postmarkapp.com/developer
  - type: GettingStarted
    url: https://postmarkapp.com/developer/api/overview
  - type: Authentication
    url: https://postmarkapp.com/developer/api/overview#authentication
  - type: AsyncAPI
    url: asyncapi/postmark-webhooks-asyncapi.yml
  - type: GraphQL
    url: graphql/postmark-graphql.md
- aid: postmark:postmark-triggerid-api
  name: Postmark Triggerid API
  description: The Triggerid API from Postmark — 1 operation(s) for triggerid.
  humanURL: https://postmarkapp.com/developer
  baseURL: https://api.postmarkapp.com
  tags:
  - Triggerid
  properties:
  - type: OpenAPI
    url: openapi/postmark-triggerid-api-openapi.yml
  - type: Documentation
    url: https://postmarkapp.com/developer
  - type: GettingStarted
    url: https://postmarkapp.com/developer/api/overview
  - type: Authentication
    url: https://postmarkapp.com/developer/api/overview#authentication
  - type: AsyncAPI
    url: asyncapi/postmark-webhooks-asyncapi.yml
  - type: GraphQL
    url: graphql/postmark-graphql.md
- aid: postmark:postmark-triggers-api
  name: Postmark Triggers API
  description: The Triggers API from Postmark — 4 operation(s) for triggers.
  humanURL: https://postmarkapp.com/developer
  baseURL: https://api.postmarkapp.com
  tags:
  - Triggers
  properties:
  - type: OpenAPI
    url: openapi/postmark-triggers-api-openapi.yml
  - type: Documentation
    url: https://postmarkapp.com/developer
  - type: GettingStarted
    url: https://postmarkapp.com/developer/api/overview
  - type: Authentication
    url: https://pos

# --- truncated at 32 KB (36 KB total) ---
# Full source: https://raw.githubusercontent.com/api-evangelist/postmark/refs/heads/main/apis.yml