Microsoft Outlook

Microsoft Outlook is a personal information manager and email client that is part of the Microsoft Office suite. It provides email, calendar, contact management, task management, and other productivity features.

Microsoft Outlook publishes 4 API contracts indexed on the APIs.io network, including Attachments API, Mail Folders API, Messages API, and 1 more. Tagged areas include Calendar, Contacts, Email, Enterprise, and Microsoft.

The Microsoft Outlook catalog on APIs.io includes 1 event-driven AsyncAPI specification, 2 JSON-LD contexts, and 4 Spectral governance rulesets.

Microsoft Outlook’s developer surface includes authentication, changelog, CLI, sandbox, developer portal, getting-started guide, documentation, and 64 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

70.6/100 exemplar ▬ flat Agent 50/100 agent ready saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemiumSelf serve⚡ Free to try

1 published contract 1 MCP Servers 3 Agent Skills 10 Features 6 Use Cases

Calendar Contacts Email Enterprise Microsoft Office 365 Productivity

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 70.6/100 · exemplar

Contract Quality 15.0 / 19

Developer Ergonomics 12.2 / 15

Access Clarity 8.7 / 15

Operational Transparency 5.1 / 10

Contract Governance 2.9 / 9

Discoverability 6.2 / 8

Regulatory Posture 6.8 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 50/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 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 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

Delegated User Identity 6 / 6

Protected Resource Metadata 5 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) 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.

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
Documented Reversibility +6 pts — a reversal operation in the contract, graded up when a window is documented too
Agentic Commerce Well-Known Document +5 pts — a parsing /.well-known/ucp.json or acp.json declaring a version and at least one service, OR (0.27) a live x402 payment challenge from _data/x402-adoption.json — `self` when its endpoints are on the provider's own domain, `platform` when they are on a vendor's
Dry-Run / Simulate Mode +4 pts — OpenAPI: destructive operations expose a dry_run / simulate / preview / validate_only parameter

2 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Access Clarity scores 57.9 — up to +8.4 composite points
Contract Governance scores 31.8 — up to +8.2 composite points
Operational Transparency scores 52.6 — up to +6.2 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/microsoft-outlook/apis.yml: open an issue on github.com/api-evangelist/microsoft-outlook to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Workplace Collaboration App Marketplaces	long-tail	7.5	-	-
IFTTT Services (service publishers)	long-tail	7.5	-	-
Smartsheet Marketplace (connectors and partner-built solutions on Smartsheet)	long-tail	7.5	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Standards implemented 4

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

Model Context Protocol (MCP)

measured — observed by APIs.io (verified)

OAuth 2.0 Protected Resource Metadata

measured — observed by APIs.io (verified)

OpenAPI

measured — observed by APIs.io (published)

OAuth 2.0

measured — observed by APIs.io (declared)

APIs 4

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

Outlook Add-ins API

JavaScript API for building Outlook add-ins that extend Outlook functionality with custom features, using the Office.js library and the Mailbox requirement set.

Microsoft Outlook Attachments API

Operations on message attachments

Microsoft Outlook Mail Folders API

Operations on mail folders in a user mailbox

Microsoft Outlook Messages API

Operations on email messages in a user mailbox

Postman Collections 1

Ready-to-run Postman collections for exercising this provider's APIs.

Microsoft Outlook Microsoft Graph Mail API

POSTMAN

Open Collections 4

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

Microsoft Outlook Microsoft Graph Mail API

OPEN COLLECTION

Microsoft Outlook Microsoft Graph Mail Attachments API

OPEN COLLECTION

Microsoft Outlook Microsoft Graph Mail Attachments Mail Folders API

OPEN COLLECTION

Microsoft Outlook Microsoft Graph Mail Attachments Messages API

OPEN COLLECTION

Arazzo Workflows 12

Multi-step API workflows described with the Arazzo specification.

Microsoft Outlook Archive Copy of a Message

Create an archive folder, copy a message into it, and read the copy back.

ARAZZO

Microsoft Outlook Build Folder Tree and Seed Draft

Create a parent folder, a child subfolder, and a seed draft inside the child.

ARAZZO

Microsoft Outlook Compose, Attach, and Send

Create a draft message, attach a file to it, and send the finished draft.

ARAZZO

Microsoft Outlook Draft, Refine, and Send

Create a draft, refine its body and importance, then send the polished draft.

ARAZZO

Microsoft Outlook File Message into New Folder

Create a mail folder, find a matching message, and move it into the folder.

ARAZZO

Microsoft Outlook Find and Forward

Find a message by subject, read it, then forward it to a new recipient.

ARAZZO

Microsoft Outlook Inspect and Remove Attachment

Find a message with attachments, inspect the first one, and delete it.

ARAZZO

Microsoft Outlook Large Attachment Upload Session

Draft a message and open an upload session for a large (3-150 MB) attachment.

ARAZZO

Microsoft Outlook Reorganize Folder

Create a destination folder, find a source folder by name, and move it under the destination.

ARAZZO

Microsoft Outlook Reply Draft with Attachment

Create a reply draft for a message, attach a file, and send the reply.

ARAZZO

Microsoft Outlook Review Folder and Mark Read

Open a mail folder, list its unread messages, and mark the top one as read.

ARAZZO

Microsoft Outlook Triage and Reply

List the newest messages, read the top one in full, and reply to its sender.

ARAZZO

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MCP Servers 1

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

Microsoft MCP Server for Enterprise

Remote MCP server at mcp.svc.cloud.microsoft over HTTP; 3 tools listed.

MCP SERVER

Agent Skills 3

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

microsoft-outlook-compose-attach-send

AGENT SKILL

microsoft-outlook-file-into-folder

AGENT SKILL

microsoft-outlook-triage-and-reply

AGENT SKILL

Microsoft Outlook API pricing

Not yet checked against Microsoft Outlook's own pricing page. Compiled by API Evangelist on 2026-05-05 from www.microsoft.com/en-us/microsoft-365/outlook/email-and-c...; confirm before you rely on a figure. A free plan or tier is listed.

Plan	Price
Outlook.com (Free) freemium	Free
Outlook via Microsoft 365 Business Basic subscription	$6.00 per per user, paid yearly (with Teams) / month · $4.40 per per user, paid yearly (no Teams) / month
Outlook via Microsoft 365 Business Standard subscription	$12.50 per per user, paid yearly (with Teams) / month
Outlook via Exchange Online Plan 2 subscription	$8.00 per per user, paid yearly / month
Outlook via Microsoft 365 E5 subscription	$57.00 per per user, paid yearly (with Teams) / month

Plan details, limits and sources →

Rate limits

Microsoft Graph global ceiling: 130000 requests per 10 seconds
EWS — concurrent connections per app/mailbox: 27 concurrent connections
EWS — total per mailbox: 27 concurrent connections

Compiled by API Evangelist, not yet checked against Microsoft Outlook's documentation. All 7 limits →

Pricing Plans 1

Published pricing tiers and plan structures.

Microsoft Outlook Plans Pricing

5 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Microsoft Outlook Rate Limits

7 limits

RATE LIMITS

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

Microsoft Outlook

SLA

FinOps 1

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

Microsoft Outlook Finops

FINOPS

Features 10

Notable capabilities this provider offers.

Email management with full CRUD operations on messages

Calendar scheduling with meeting invitations and RSVPs

Contact management across personal and organizational directories

Task and to-do list management

Focused Inbox classification and mail rules

Real-time change notifications via webhooks

Rich attachment handling with large file support

Categories for organizing messages, events, and contacts

People insights aggregated across multiple sources

Outlook add-in extensibility via Office.js

Scroll for all 10

Event Specifications 1

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

Microsoft Outlook Change Notifications

AsyncAPI specification for Microsoft Graph change notifications (webhooks) for Outlook mail resources. Enables real-time event-driven architecture by subscribing to changes in m...

ASYNCAPI

Semantic Vocabularies 2

JSON-LD contexts and semantic vocabularies used across these APIs.

Microsoft Graph Mail Context

0 classes · 0 properties

JSON-LD

Microsoft Outlook Context

0 classes · 13 properties

JSON-LD

Spectral Rules 4

Spectral governance rulesets for linting and validating these APIs.

Microsoft Outlook — asyncapi rules

9 rules · 1 errors 7 warnings 1 info

SPECTRAL

Microsoft Outlook — jsonschema rules

6 rules · 4 warnings 2 info

SPECTRAL

Microsoft Outlook API Rules

69 rules · 62 errors 5 warnings 2 info

SPECTRAL

Microsoft Outlook API Rules

18 rules · 8 errors 9 warnings 1 info

SPECTRAL

OpenAPI Overlays 1

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Microsoft Outlook Microsoft Graph Mail Api Overlay

4 actions · update · microsoft-graph-mail-api-openapi.yml

DERIVED

JSON Schema 15

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

AttachmentCollectionResponse

2 properties

JSON SCHEMA

Attachment

10 properties

JSON SCHEMA

DateTimeTimeZone

2 properties

JSON SCHEMA

EmailAddress

2 properties

JSON SCHEMA

FollowupFlag

1 properties

JSON SCHEMA

InternetMessageHeader

2 properties

JSON SCHEMA

ItemBody

2 properties

JSON SCHEMA

MailFolderCollectionResponse

3 properties

JSON SCHEMA

MailFolder

7 properties

JSON SCHEMA

MessageCollectionResponse

4 properties

JSON SCHEMA

Message

27 properties

JSON SCHEMA

ODataError

1 properties

JSON SCHEMA

Recipient

0 properties

JSON SCHEMA

UploadSession

3 properties

JSON SCHEMA

Microsoft Outlook Message

32 properties

JSON SCHEMA

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JSON Structure 14

JSON Structure definitions describing this provider's data shapes.

Microsoft Graph Mail Attachment Collection Response Structure

2 properties

JSON STRUCTURE

Microsoft Graph Mail Attachment Structure

10 properties

JSON STRUCTURE

Microsoft Graph Mail Date Time Time Zone Structure

2 properties

JSON STRUCTURE

Microsoft Graph Mail Email Address Structure

2 properties

JSON STRUCTURE

Microsoft Graph Mail Followup Flag Structure

1 properties

JSON STRUCTURE

Microsoft Graph Mail Internet Message Header Structure

2 properties

JSON STRUCTURE

Microsoft Graph Mail Item Body Structure

2 properties

JSON STRUCTURE

Microsoft Graph Mail Mail Folder Collection Response Structure

3 properties

JSON STRUCTURE

Microsoft Graph Mail Mail Folder Structure

7 properties

JSON STRUCTURE

Microsoft Graph Mail Message Collection Response Structure

4 properties

JSON STRUCTURE

Microsoft Graph Mail Message Structure

27 properties

JSON STRUCTURE

Microsoft Graph Mail O Data Error Structure

1 properties

JSON STRUCTURE

Microsoft Graph Mail Recipient Structure

0 properties

JSON STRUCTURE

Microsoft Graph Mail Upload Session Structure

3 properties

JSON STRUCTURE

Scroll for all 14

Examples 14

Example request and response payloads for these APIs.

Microsoft Graph Mail Attachment Collection Response Example

2 fields

EXAMPLE

Microsoft Graph Mail Attachment Example

10 fields

EXAMPLE

Microsoft Graph Mail Date Time Time Zone Example

2 fields

EXAMPLE

Microsoft Graph Mail Email Address Example

2 fields

EXAMPLE

Microsoft Graph Mail Followup Flag Example

1 fields

EXAMPLE

Microsoft Graph Mail Internet Message Header Example

2 fields

EXAMPLE

Microsoft Graph Mail Item Body Example

2 fields

EXAMPLE

Microsoft Graph Mail Mail Folder Collection Response Example

3 fields

EXAMPLE

Microsoft Graph Mail Mail Folder Example

7 fields

EXAMPLE

Microsoft Graph Mail Message Collection Response Example

4 fields

EXAMPLE

Microsoft Graph Mail Message Example

27 fields

EXAMPLE

Microsoft Graph Mail O Data Error Example

1 fields

EXAMPLE

Microsoft Graph Mail Recipient Example

0 fields

EXAMPLE

Microsoft Graph Mail Upload Session Example

3 fields

EXAMPLE

Scroll for all 14

Security Posture 4

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

Microsoft Outlook Authentication

oauth2 · 1 scheme

SECURITY

Microsoft Outlook Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Microsoft Outlook Vulnerability Disclosure

security.txt · contact published

SECURITY

Microsoft Outlook Trust Center

GDPR

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Microsoft Outlook Scopes

20 scopes · authorizationCode

20 scopes

SCOPES

Agentic Access 1

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

Microsoft Outlook Agentic Access

31 operations · 23 acting

AGENTIC

Use Cases 6

What developers build with this provider.

Building email client integrations and automation workflows

Scheduling meetings and managing calendars programmatically

Syncing contacts between systems

Creating automated email processing pipelines

Building productivity dashboards with mail and calendar data

Extending Outlook with custom add-ins

Integrations 7

Pre-built integrations with other platforms and tools.

Microsoft Teams

Microsoft Power Automate

Microsoft Power Apps

SharePoint

OneDrive

Azure Active Directory

Microsoft To Do

Scroll for all 7

Resources

Get Started 6

Portal, sign-up, and the first successful call

Sandbox

Portal

GettingStarted

Signup

Login

GettingStarted

GettingStarted

Documentation 3

Reference material describing how the API behaves

AsyncAPI

AsyncAPI

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

AgentSkill

AgenticAccess

WellKnown

MCPServer

LLMsTxt

Design & Contract 24

Pagination, idempotency, versioning, errors, and events

Spectral

Spectral

Spectral

Spectral

JSONLD

Vocabulary

Conformance

ErrorCatalog

Lifecycle

Conventions

DataModel

Components

Arazzo

Arazzo

Arazzo

Arazzo

Arazzo

Arazzo

Arazzo

Arazzo

Arazzo

Arazzo

Arazzo

Arazzo

Scroll for all 24

Build 7

SDKs, sample code, and the tooling you integrate with

ToolCrosswalk

IntegrationEdges

Packages

CLI

PostmanWorkspace

SDKs

GitHubOrganization

GitHubOrganization

Scroll for all 7

Access & Security 8

Authentication, authorization, and security posture

Compliance

Compliance

Security

Security

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

Authentication

OAuthScopes

TrustCenter

Authentication

Scroll for all 8

Learn 1

Tutorials, courses, talks, and written guidance

Training

Training

Operate 7

Status, limits, changes, and where to get help

Deprecation

RateLimits

ChangeLog

ChangeLog

Support

StatusPage

StackOverflow

Scroll for all 7

Commercial 4

Pricing, plans, and the legal terms of use

Plans

FinOps

TermsOfService

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 4

Properties that don't map to a standard resource type

Hosts

Vendors

Leadership

Overlay

Source (apis.yml)

aid: microsoft-outlook
name: Microsoft Outlook
description: Microsoft Outlook is a personal information manager and email client that is part of the Microsoft Office suite.
  It provides email, calendar, contact management, task management, and other productivity features.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  gated: none
  gated_source:
  - onboarding
  label: Freemium · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  - scopes
  - security
  - sandbox
  generated: '2026-11-06'
  method: derived
image: https://www.microsoft.com/en-us/microsoft-365/blog/wp-content/uploads/sites/2/2019/11/Outlook-logo.png
created: '2024'
modified: '2026-06-20'
specificationVersion: '0.23'
url: https://outlook.office.com
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
  url: https://apievangelist.com
tags:
- Calendar
- Contacts
- Email
- Enterprise
- Microsoft
- Office 365
- Productivity
common:
- type: Spectral
  url: rules/microsoft-outlook-spectral-rules.yml
- type: Spectral
  url: rules/microsoft-outlook-rules.yml
- type: Spectral
  url: rules/microsoft-outlook-jsonschema-spectral-rules.yml
- type: Spectral
  url: rules/microsoft-outlook-asyncapi-spectral-rules.yml
- type: JSONLD
  url: json-ld/microsoft-graph-mail-context.jsonld
- type: Vocabulary
  url: vocabulary/microsoft-outlook-vocabulary.yml
- type: AgentSkill
  url: skills/_index.yml
- type: AsyncAPI
  url: asyncapi/microsoft-outlook-change-notifications-asyncapi.yml
- type: Compliance
  url: https://www.microsoft.com/en-us/trust-center
- type: Deprecation
  url: https://learn.microsoft.com/en-us/graph/versioning-and-support#deprecation
- type: ToolCrosswalk
  url: mcp/microsoft-outlook-tool-crosswalk.yml
- type: Hosts
  url: hosts/microsoft-outlook-hosts.yml
- type: IntegrationEdges
  url: integrations/microsoft-outlook-integration-edges.yml
- type: Vendors
  url: vendors/microsoft-outlook-vendors.yml
- type: Security
  url: https://www.microsoft.com/security
- type: Leadership
  url: https://news.microsoft.com/leadership
- type: Plans
  url: plans/microsoft-outlook-plans-pricing.yml
- type: RateLimits
  url: rate-limits/microsoft-outlook-rate-limits.yml
- type: FinOps
  url: finops/microsoft-outlook-finops.yml
- type: Website
  url: https://www.microsoft.com/
- type: AgenticAccess
  url: agentic-access/microsoft-outlook-agentic-access.yml
- type: VulnerabilityDisclosure
  url: security/microsoft-outlook-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/microsoft-outlook-domain-security.yml
- type: Authentication
  url: authentication/microsoft-outlook-authentication.yml
- type: OAuthScopes
  url: scopes/microsoft-outlook-scopes.yml
- type: TrustCenter
  url: security/microsoft-outlook-trust-center.yml
- type: Packages
  url: packages/microsoft-outlook-packages.yml
- type: WellKnown
  url: well-known/microsoft-outlook-well-known.yml
- type: MCPServer
  url: mcp/microsoft-outlook-mcp.yml
- type: LLMsTxt
  url: llms/microsoft-outlook-llms.txt
- type: Overlay
  url: overlays/microsoft-outlook-microsoft-graph-mail-api-overlay.yaml
- type: Conformance
  url: conformance/microsoft-outlook-conformance.yml
- type: ErrorCatalog
  url: errors/microsoft-outlook-problem-types.yml
- type: Lifecycle
  url: lifecycle/microsoft-outlook-lifecycle.yml
- type: Conventions
  url: conventions/microsoft-outlook-conventions.yml
- type: DataModel
  url: data-model/microsoft-outlook-data-model.yml
- type: ChangeLog
  url: changelog/microsoft-outlook-changelog.yml
- type: CLI
  url: cli/microsoft-outlook-cli.yml
- type: Components
  url: components/microsoft-outlook-components.yml
- type: Sandbox
  url: sandbox/microsoft-outlook-sandbox.yml
- type: PostmanWorkspace
  url: https://www.postman.com/kinlaneapi/microsoft-outlook/overview
- type: Arazzo
  url: arazzo/microsoft-outlook-archive-copy-message-workflow.yml
  name: Microsoft Outlook Archive Copy of a Message
- type: Arazzo
  url: arazzo/microsoft-outlook-build-folder-tree-and-seed-draft-workflow.yml
  name: Microsoft Outlook Build Folder Tree and Seed Draft
- type: Arazzo
  url: arazzo/microsoft-outlook-compose-attach-send-workflow.yml
  name: Microsoft Outlook Compose, Attach, and Send
- type: Arazzo
  url: arazzo/microsoft-outlook-draft-refine-send-workflow.yml
  name: Microsoft Outlook Draft, Refine, and Send
- type: Arazzo
  url: arazzo/microsoft-outlook-file-message-into-new-folder-workflow.yml
  name: Microsoft Outlook File Message into New Folder
- type: Arazzo
  url: arazzo/microsoft-outlook-find-and-forward-workflow.yml
  name: Microsoft Outlook Find and Forward
- type: Arazzo
  url: arazzo/microsoft-outlook-inspect-and-remove-attachment-workflow.yml
  name: Microsoft Outlook Inspect and Remove Attachment
- type: Arazzo
  url: arazzo/microsoft-outlook-large-attachment-upload-session-workflow.yml
  name: Microsoft Outlook Large Attachment Upload Session
- type: Arazzo
  url: arazzo/microsoft-outlook-reorganize-folder-workflow.yml
  name: Microsoft Outlook Reorganize Folder
- type: Arazzo
  url: arazzo/microsoft-outlook-reply-draft-with-attachment-workflow.yml
  name: Microsoft Outlook Reply Draft with Attachment
- type: Arazzo
  url: arazzo/microsoft-outlook-review-folder-and-mark-read-workflow.yml
  name: Microsoft Outlook Review Folder and Mark Read
- type: Arazzo
  url: arazzo/microsoft-outlook-triage-and-reply-workflow.yml
  name: Microsoft Outlook Triage and Reply
- type: Portal
  url: https://developer.microsoft.com/en-us/graph
- type: GettingStarted
  url: https://learn.microsoft.com/en-us/graph/overview
- type: Documentation
  url: https://learn.microsoft.com/en-us/outlook/
- type: Authentication
  url: https://learn.microsoft.com/en-us/graph/auth/
- type: SDKs
  url: https://learn.microsoft.com/en-us/graph/sdks/sdks-overview
- type: ChangeLog
  url: https://developer.microsoft.com/en-us/graph/changelog
- type: APIReference
  url: https://learn.microsoft.com/en-us/graph/api/overview?view=graph-rest-1.0
- type: Blog
  url: https://devblogs.microsoft.com/microsoft365dev/tag/outlook/
- type: GitHubOrganization
  url: https://github.com/microsoftgraph
- type: Signup
  url: https://developer.microsoft.com/en-us/microsoft-365/dev-program
- type: Login
  url: https://portal.azure.com
- type: TermsOfService
  url: https://learn.microsoft.com/en-us/legal/microsoft-apis/terms-of-use
- type: PrivacyPolicy
  url: https://privacy.microsoft.com/en-us/privacystatement
- type: Support
  url: https://developer.microsoft.com/en-us/graph/support
- type: StatusPage
  url: https://status.cloud.microsoft/
- type: StackOverflow
  url: https://stackoverflow.com/questions/tagged/microsoft-graph
- type: GettingStarted
  url: https://developer.microsoft.com/en-us/graph/quick-start
- type: Training
  url: https://learn.microsoft.com/en-us/training/paths/m365-msgraph-fundamentals/
- type: Features
  data:
  - Email management with full CRUD operations on messages
  - Calendar scheduling with meeting invitations and RSVPs
  - Contact management across personal and organizational directories
  - Task and to-do list management
  - Focused Inbox classification and mail rules
  - Real-time change notifications via webhooks
  - Rich attachment handling with large file support
  - Categories for organizing messages, events, and contacts
  - People insights aggregated across multiple sources
  - Outlook add-in extensibility via Office.js
- type: UseCases
  data:
  - Building email client integrations and automation workflows
  - Scheduling meetings and managing calendars programmatically
  - Syncing contacts between systems
  - Creating automated email processing pipelines
  - Building productivity dashboards with mail and calendar data
  - Extending Outlook with custom add-ins
- type: Integrations
  data:
  - Microsoft Teams
  - Microsoft Power Automate
  - Microsoft Power Apps
  - SharePoint
  - OneDrive
  - Azure Active Directory
  - Microsoft To Do
apis:
- name: Outlook Add-ins API
  description: JavaScript API for building Outlook add-ins that extend Outlook functionality with custom features, using the
    Office.js library and the Mailbox requirement set.
  image: https://docs.microsoft.com/en-us/graph/images/microsoft-graph.png
  humanURL: https://learn.microsoft.com/en-us/office/dev/add-ins/outlook/
  baseURL: https://appsforoffice.microsoft.com/lib/1/hosted/office.js
  tags:
  - Add-Ins
  - Extensions
  - Office-Js
  - Plugins
  tags_raw:
  - Add-Ins
  - Extensions
  - Office.js
  - Plugins
  properties:
  - type: Documentation
    url: https://learn.microsoft.com/en-us/office/dev/add-ins/outlook/
  - type: GettingStarted
    url: https://learn.microsoft.com/en-us/office/dev/add-ins/quickstarts/outlook-quickstart-yo
  - type: APIReference
    url: https://learn.microsoft.com/en-us/office/dev/add-ins/reference/javascript-api-for-office
  - type: Authentication
    url: https://learn.microsoft.com/en-us/office/dev/add-ins/outlook/microsoft-graph
  - type: GitHubOrganization
    url: https://github.com/OfficeDev/office-js
  aid: microsoft-outlook:outlook-add-ins-api
- aid: microsoft-outlook:microsoft-outlook-attachments-api
  name: Microsoft Outlook Attachments API
  description: Operations on message attachments
  humanURL: https://learn.microsoft.com/en-us/graph/api/resources/mail-api-overview?view=graph-rest-1.0
  baseURL: https://graph.microsoft.com/v1.0
  tags:
  - Attachments
  properties:
  - type: OpenAPI
    url: openapi/microsoft-outlook-attachments-api-openapi.yml
  - type: Documentation
    url: https://learn.microsoft.com/en-us/graph/api/resources/mail-api-overview?view=graph-rest-1.0
  - type: JSONSchema
    url: json-schema/microsoft-outlook-message-schema.json
  - type: JSONLD
    url: json-ld/microsoft-outlook-context.jsonld
  - type: Authentication
    url: https://learn.microsoft.com/en-us/graph/auth/
  - type: GettingStarted
    url: https://learn.microsoft.com/en-us/graph/outlook-mail-concept-overview
  - type: APIReference
    url: https://learn.microsoft.com/en-us/graph/api/overview?view=graph-rest-1.0
  - type: SDKs
    url: https://learn.microsoft.com/en-us/graph/sdks/sdks-overview
  - type: ChangeLog
    url: https://developer.microsoft.com/en-us/graph/changelog
  - type: Documentation
    url: https://learn.microsoft.com/en-us/graph/api/resources/calendar?view=graph-rest-1.0
  - type: CodeExamples
    url: https://learn.microsoft.com/en-us/graph/api/resources/calendar?view=graph-rest-1.0#code-samples
  - type: GettingStarted
    url: https://learn.microsoft.com/en-us/graph/outlook-calendar-concept-overview
  - type: APIReference
    url: https://learn.microsoft.com/en-us/graph/api/resources/calendar-overview?view=graph-rest-1.0
  - type: Documentation
    url: https://learn.microsoft.com/en-us/graph/api/resources/contact?view=graph-rest-1.0
  - type: GettingStarted
    url: https://learn.microsoft.com/en-us/graph/outlook-contacts-concept-overview
  - type: Documentation
    url: https://learn.microsoft.com/en-us/graph/api/resources/todo-overview?view=graph-rest-1.0
  - type: GettingStarted
    url: https://learn.microsoft.com/en-us/graph/todo-concept-overview
  - type: Documentation
    url: https://learn.microsoft.com/en-us/graph/people-insights-overview
  - type: Documentation
    url: https://learn.microsoft.com/en-us/graph/outlook-change-notifications-overview
  - type: GettingStarted
    url: https://learn.microsoft.com/en-us/graph/change-notifications-delivery-webhooks
  - type: APIReference
    url: https://learn.microsoft.com/en-us/graph/api/resources/change-notifications-api-overview?view=graph-rest-1.0
  - type: Documentation
    url: https://learn.microsoft.com/en-us/graph/api/resources/manage-focused-inbox?view=graph-rest-1.0
  - type: Documentation
    url: https://learn.microsoft.com/en-us/graph/api/resources/messagerule?view=graph-rest-1.0
  - type: GettingStarted
    url: https://learn.microsoft.com/en-us/graph/outlook-organize-messages
  - type: Documentation
    url: https://learn.microsoft.com/en-us/graph/api/resources/outlookcategory?view=graph-rest-1.0
- aid: microsoft-outlook:microsoft-outlook-mail-folders-api
  name: Microsoft Outlook Mail Folders API
  description: Operations on mail folders in a user mailbox
  humanURL: https://learn.microsoft.com/en-us/graph/api/resources/mail-api-overview?view=graph-rest-1.0
  baseURL: https://graph.microsoft.com/v1.0
  tags:
  - Mail Folders
  properties:
  - type: OpenAPI
    url: openapi/microsoft-outlook-mail-folders-api-openapi.yml
  - type: Documentation
    url: https://learn.microsoft.com/en-us/graph/api/resources/mail-api-overview?view=graph-rest-1.0
  - type: JSONSchema
    url: json-schema/microsoft-outlook-message-schema.json
  - type: JSONLD
    url: json-ld/microsoft-outlook-context.jsonld
  - type: Authentication
    url: https://learn.microsoft.com/en-us/graph/auth/
  - type: GettingStarted
    url: https://learn.microsoft.com/en-us/graph/outlook-mail-concept-overview
  - type: APIReference
    url: https://learn.microsoft.com/en-us/graph/api/overview?view=graph-rest-1.0
  - type: SDKs
    url: https://learn.microsoft.com/en-us/graph/sdks/sdks-overview
  - type: ChangeLog
    url: https://developer.microsoft.com/en-us/graph/changelog
  - type: Documentation
    url: https://learn.microsoft.com/en-us/graph/api/resources/calendar?view=graph-rest-1.0
  - type: CodeExamples
    url: https://learn.microsoft.com/en-us/graph/api/resources/calendar?view=graph-rest-1.0#code-samples
  - type: GettingStarted
    url: https://learn.microsoft.com/en-us/graph/outlook-calendar-concept-overview
  - type: APIReference
    url: https://learn.microsoft.com/en-us/graph/api/resources/calendar-overview?view=graph-rest-1.0
  - type: Documentation
    url: https://learn.microsoft.com/en-us/graph/api/resources/contact?view=graph-rest-1.0
  - type: GettingStarted
    url: https://learn.microsoft.com/en-us/graph/outlook-contacts-concept-overview
  - type: Documentation
    url: https://learn.microsoft.com/en-us/graph/api/resources/todo-overview?view=graph-rest-1.0
  - type: GettingStarted
    url: https://learn.microsoft.com/en-us/graph/todo-concept-overview
  - type: Documentation
    url: https://learn.microsoft.com/en-us/graph/people-insights-overview
  - type: Documentation
    url: https://learn.microsoft.com/en-us/graph/outlook-change-notifications-overview
  - type: GettingStarted
    url: https://learn.microsoft.com/en-us/graph/change-notifications-delivery-webhooks
  - type: APIReference
    url: https://learn.microsoft.com/en-us/graph/api/resources/change-notifications-api-overview?view=graph-rest-1.0
  - type: Documentation
    url: https://learn.microsoft.com/en-us/graph/api/resources/manage-focused-inbox?view=graph-rest-1.0
  - type: Documentation
    url: https://learn.microsoft.com/en-us/graph/api/resources/messagerule?view=graph-rest-1.0
  - type: GettingStarted
    url: https://learn.microsoft.com/en-us/graph/outlook-organize-messages
  - type: Documentation
    url: https://learn.microsoft.com/en-us/graph/api/resources/outlookcategory?view=graph-rest-1.0
- aid: microsoft-outlook:microsoft-outlook-messages-api
  name: Microsoft Outlook Messages API
  description: Operations on email messages in a user mailbox
  humanURL: https://learn.microsoft.com/en-us/graph/api/resources/mail-api-overview?view=graph-rest-1.0
  baseURL: https://graph.microsoft.com/v1.0
  tags:
  - Message
  tags_raw:
  - Messages
  properties:
  - type: OpenAPI
    url: openapi/microsoft-outlook-messages-api-openapi.yml
  - type: Documentation
    url: https://learn.microsoft.com/en-us/graph/api/resources/mail-api-overview?view=graph-rest-1.0
  - type: JSONSchema
    url: json-schema/microsoft-outlook-message-schema.json
  - type: JSONLD
    url: json-ld/microsoft-outlook-context.jsonld
  - type: Authentication
    url: https://learn.microsoft.com/en-us/graph/auth/
  - type: GettingStarted
    url: https://learn.microsoft.com/en-us/graph/outlook-mail-concept-overview
  - type: APIReference
    url: https://learn.microsoft.com/en-us/graph/api/overview?view=graph-rest-1.0
  - type: SDKs
    url: https://learn.microsoft.com/en-us/graph/sdks/sdks-overview
  - type: ChangeLog
    url: https://developer.microsoft.com/en-us/graph/changelog
  - type: Documentation
    url: https://learn.microsoft.com/en-us/graph/api/resources/calendar?view=graph-rest-1.0
  - type: CodeExamples
    url: https://learn.microsoft.com/en-us/graph/api/resources/calendar?view=graph-rest-1.0#code-samples
  - type: GettingStarted
    url: https://learn.microsoft.com/en-us/graph/outlook-calendar-concept-overview
  - type: APIReference
    url: https://learn.microsoft.com/en-us/graph/api/resources/calendar-overview?view=graph-rest-1.0
  - type: Documentation
    url: https://learn.microsoft.com/en-us/graph/api/resources/contact?view=graph-rest-1.0
  - type: GettingStarted
    url: https://learn.microsoft.com/en-us/graph/outlook-contacts-concept-overview
  - type: Documentation
    url: https://learn.microsoft.com/en-us/graph/api/resources/todo-overview?view=graph-rest-1.0
  - type: GettingStarted
    url: https://learn.microsoft.com/en-us/graph/todo-concept-overview
  - type: Documentation
    url: https://learn.microsoft.com/en-us/graph/people-insights-overview
  - type: Documentation
    url: https://learn.microsoft.com/en-us/graph/outlook-change-notifications-overview
  - type: GettingStarted
    url: https://learn.microsoft.com/en-us/graph/change-notifications-delivery-webhooks
  - type: APIReference
    url: https://learn.microsoft.com/en-us/graph/api/resources/change-notifications-api-overview?view=graph-rest-1.0
  - type: Documentation
    url: https://learn.microsoft.com/en-us/graph/api/resources/manage-focused-inbox?view=graph-rest-1.0
  - type: Documentation
    url: https://learn.microsoft.com/en-us/graph/api/resources/messagerule?view=graph-rest-1.0
  - type: GettingStarted
    url: https://learn.microsoft.com/en-us/graph/outlook-organize-messages
  - type: Documentation
    url: https://learn.microsoft.com/en-us/graph/api/resources/outlookcategory?view=graph-rest-1.0
properties:
  title: Graph Mail API Shared Definition
x-parent: microsoft-365
x-relationship: product
x-enrichment:
  date: '2026-11-05'
  status: enriched
  artifacts_added: 5
  pass: local-v6

Microsoft Outlook API — frequently asked questions

Does Microsoft Outlook have an API?

Yes. APIs.io lists 4 APIs from Microsoft Outlook, including Outlook Add-ins API, Microsoft Outlook Attachments API and Microsoft Outlook Mail Folders API, and 1 more.

Is there an OpenAPI specification for the Microsoft Outlook API?

Yes. APIs.io indexes 3 OpenAPI specifications for Microsoft Outlook, each linked for download from this page.

How do I authenticate with the Microsoft Outlook API?

Microsoft Outlook documents its authentication (oauth2 · 1 scheme). The details are profiled on APIs.io as Microsoft Outlook Authentication.

How much does the Microsoft Outlook API cost?

APIs.io lists 5 pricing plans for Microsoft Outlook, with each plan's price, limits and inclusions under Pricing on this page.

Does Microsoft Outlook have an MCP server?

Yes. APIs.io lists 1 MCP server for Microsoft Outlook: Remote MCP server at mcp.svc.cloud.microsoft over HTTP; 3 tools listed.

Is the Microsoft Outlook API ready for AI agents?

Microsoft Outlook has a Kin Score of 70.6 out of 100 (exemplar) and an Agent Readiness score of 49.5 (agent-ready), scored by API Evangelist on 2026-11-06.

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