Moosend

Moosend is an email marketing and automation platform with a REST API for managing mailing lists, campaigns, subscribers, automations, and tracking email performance metrics. The API uses HTTPS with API key authentication and provides programmatic access to email lists, subscriber management, campaign creation and scheduling, audience segmentation, transactional emails, and real-time reporting.

Moosend publishes 1 API on the APIs.io network. Tagged areas include Email Marketing, Marketing Automation, Campaigns, Mailing Lists, and Subscribers.

The Moosend catalog on APIs.io includes 1 JSON-LD context.

Moosend’s developer surface includes authentication, documentation, API reference, support, signup flow, engineering blog, pricing, and 32 more developer resources.

🌐 Visit website 📡 Source on GitHub

68.3/100 exemplar ▬ flat Agent 37/100 agent ready Full breakdown ↓
scored 2026-08-20 · rubric v0.12.0

AccessFreemiumFree trial

1 APIs 1 MCP Servers

Email Marketing Marketing Automation Campaigns Mailing Lists Subscribers Transactional Email SMTP Segmentation Analytics Email Newsletters Landing PagesWebsite TrackingMarketing

Kin Score

Kin Score How this is scored →
scored 2026-08-20 · rubric v0.12.0

Composite quality — 68.3/100 · exemplar

Contract Quality 13.2 / 21

Developer Ergonomics 8.6 / 17

Access Clarity 17.0 / 17

Operational Transparency 6.7 / 11

Contract Governance 1.7 / 10

Discoverability 7.4 / 9

Regulatory Posture 8.5 / 15

Agent readiness — 37/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 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

Regulatory Posture applies to this provider. Its tags matched the Telecommunications regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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/moosend: 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.

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

Rate Limits 1

Documented rate limits and quota policies.

Moosend Rate Limits

10 limits

RATE LIMITS

FinOps 1

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

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

SignUp

SignUp

Login

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

MCPServer

MCPServer

AgentSkill

AgentSkill

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

JSONLD

Conventions

ErrorCatalog

Lifecycle

DataModel

Components

Conformance

Scroll for all 7

Build 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Packages

Packages

SDKs

SDKs

Access & Security 6

Authentication, authorization, and security posture

Authentication

TrustCenter

DomainSecurity

Compliance

VulnerabilityDisclosure

VulnerabilityDisclosure

Security

Security

Operate 4

Status, limits, changes, and where to get help

HelpCenter

Support

StatusPage

RateLimits

Commercial 5

Pricing, plans, and the legal terms of use

TermsOfService

PrivacyPolicy

Pricing

Plans

FinOps

Company 4

The organization behind the API

Website

Website

LinkedIn

Blog

Blog

Blog

Blog

Other 2

Properties that don't map to a standard resource type

Overlay

Overlay

Source (apis.yml)

aid: moosend
name: Moosend
description: Moosend is an email marketing and automation platform with a REST API for managing mailing lists, campaigns,
  subscribers, automations, and tracking email performance metrics. The API uses HTTPS with API key authentication and provides
  programmatic access to email lists, subscriber management, campaign creation and scheduling, audience segmentation, transactional
  emails, and real-time reporting.
type: Index
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: true
  try_now: false
  public: false
  label: Freemium (free trial)
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/moosend.png
url: https://raw.githubusercontent.com/api-evangelist/moosend/refs/heads/main/apis.yml
created: '2026-06-13'
modified: '2026-08-13'
specificationVersion: '0.23'
tags:
- Email Marketing
- Marketing Automation
- Campaigns
- Mailing Lists
- Subscribers
- Transactional Email
- SMTP
- Segmentation
- Analytics
- Email
- Newsletters
- Landing Pages
- Website Tracking
- Marketing
apis:
- aid: moosend:moosend-api
  name: Moosend API
  description: The Moosend REST API (v3) enables programmatic access to email marketing and automation capabilities including
    managing email lists, subscribers, campaigns, segments, and transactional emails. Authentication is via API key passed
    as a query string parameter.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://moosend.com/
  baseURL: https://api.moosend.com/v3
  tags:
  - Email Marketing
  - Campaigns
  - Subscribers
  - Mailing Lists
  - Segmentation
  - Transactional Email
  properties:
  - type: Documentation
    url: https://docs.moosend.com/api-documentation?lang=en_US
  - type: APIReference
    url: https://moosendapp.docs.apiary.io/
  - type: OpenAPI
    url: openapi/moosend-openapi.yml
  - type: Overlay
    url: overlays/moosend-openapi-overlay.yaml
  - type: ErrorCatalog
    url: errors/moosend-problem-types.yml
  - type: DataModel
    url: data-model/moosend-data-model.yml
  - type: MCPServer
    url: mcp/moosend-mcp.yml
common:
- type: Authentication
  url: authentication/moosend-authentication.yml
- type: TrustCenter
  url: security/moosend-trust-center.yml
- type: DomainSecurity
  url: security/moosend-domain-security.yml
- type: Website
  url: https://moosend.com/
- type: Documentation
  url: https://docs.moosend.com/api-documentation?lang=en_US
- type: DeveloperPortal
  url: https://moosend.com/api/
- type: APIReference
  url: https://moosendapp.docs.apiary.io/
- type: HelpCenter
  url: https://docs.moosend.com/user-guide?lang=en_US
- type: Support
  url: https://moosend.com/contact-us/support/
- type: SignUp
  url: https://identity.moosend.com/register/
- type: Login
  url: https://app.moosend.com/login
- type: TermsOfService
  url: https://moosend.com/terms/
- type: PrivacyPolicy
  url: https://moosend.com/privacy-policy/
- type: Integrations
  url: https://moosend.com/integrations/
- type: GitHubOrganization
  url: https://github.com/moosend
- type: LinkedIn
  url: https://www.linkedin.com/company/moosend
- type: Blog
  url: https://moosend.com/blog/
- type: Pricing
  url: https://moosend.com/pricing/
- type: StatusPage
  url: https://moosend.statuspage.io
- type: X
  url: https://x.com/moosend
- type: Plans
  url: plans/moosend-plans-pricing.yml
- type: RateLimits
  url: rate-limits/moosend-rate-limits.yml
- type: FinOps
  url: finops/moosend-finops.yml
- type: Blog
  url: blogs/blogs.json
- type: JSONLD
  url: json-ld/moosend-context.jsonld
- type: Packages
  url: packages/moosend-packages.yml
- type: SDKs
  url: packages/moosend-packages.yml
- type: LLMsTxt
  url: llms/moosend-llms.txt
- type: MCPServer
  url: mcp/moosend-mcp.yml
- type: AgentSkill
  url: skills/_index.yml
- type: Conventions
  url: conventions/moosend-conventions.yml
- type: ErrorCatalog
  url: errors/moosend-problem-types.yml
- type: Lifecycle
  url: lifecycle/moosend-lifecycle.yml
- type: DataModel
  url: data-model/moosend-data-model.yml
- type: Components
  url: components/moosend-components.yml
- type: Conformance
  url: conformance/moosend-conformance.yml
- type: Compliance
  url: https://moosend.com/trust/compliance/
- type: VulnerabilityDisclosure
  url: security/moosend-vulnerability-disclosure.yml
- type: Security
  url: https://moosend.com/privacy-policy/disclosure/
- type: Overlay
  url: overlays/moosend-openapi-overlay.yaml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
x-enrichment:
  date: '2026-08-13'
  status: enriched
  artifacts_added: 21
  pass: local-v1
  contract_discovery: 'STEP 0b found Moosend''s real machine-readable contract at https://moosendapp.docs.apiary.io/api-description-document
    — an API Blueprint 1A document (270KB, 49 documented operations, HOST https://api.moosend.com/v3) that the previous round
    had catalogued only as an HTML docs link. Saved verbatim to openapi/_original/ and transcribed to OpenAPI 3.1.0 at openapi/moosend-openapi.yml
    (47 path+method operations after merging two duplicate definitions). Ownership confirmed: the blueprint''s own HOST declaration,
    title and example URLs all name api.moosend.com.'

Moosend

Kin Score

APIs 1

Moosend API

Open Collections 1

Moosend API

MCP Servers 1

Moosend MCP Server

Pricing Plans 1

Moosend Plans Pricing

Rate Limits 1

Moosend Rate Limits

FinOps 1

Moosend Finops

Semantic Vocabularies 1

Moosend Context

Security Posture 4

Moosend Authentication

Moosend Domain Security

Moosend Vulnerability Disclosure

Moosend Trust Center

Resources