Zoho Mail website screenshot

Zoho Mail

Zoho Mail is an ad-free, privacy-first email and collaboration platform offering a comprehensive REST API for managing email accounts, folders, messages, contacts, calendars, and organizational email administration. The API supports 15 modules including Organization, Domains, Groups, Users, Mail Policy, Accounts, Folders, Labels, Email Messages, Signatures, Threads, Tasks, Bookmarks, Notes, and Logs. Authentication uses OAuth 2.0 and responses are returned in JSON format with region-specific base URLs for US, Europe, India, Australia, Japan, Canada, UAE, Saudi Arabia, and China deployments.

Zoho Mail publishes 4 APIs on the APIs.io network, including Accounts API, Folders API, Messages API, and 1 more. Tagged areas include Email, Mail, Collaboration, Messaging, and Calendar.

Zoho Mail’s developer surface includes authentication, documentation, engineering blog, pricing, and 14 more developer resources.

🌐 Visit website 📡 Source on GitHub
41.5/100 thin ▬ flat Agent 31/100 agent aware Full breakdown ↓
scored 2026-07-28 · rubric v0.6
AccessFreemiumSelf serve⚡ Free to try
4 APIs
EmailMailCollaborationMessagingCalendarContactsOrganization ManagementSaaS

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 41.5/100 · thin
Contract Quality 15.7 / 25
Developer Ergonomics 4.3 / 20
Commercial Clarity 10.0 / 20
Operational Transparency 2.7 / 13
Governance 0.0 / 12
Discoverability 7.4 / 10
Agent readiness — 31/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/zoho-mail: 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 4

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

Zoho Mail Accounts API

Manage email accounts, vacation replies, forwarding, and account settings

Zoho Mail Folders API

Create and manage email folders

Zoho Mail Messages API

Send, receive, search, and manage email messages and attachments

Zoho Mail Organization API

Admin-level organization, domain, group, user, and policy management

GraphQL 1

GraphQL schemas published by this provider.

Zoho Mail GraphQL Schema

This document describes the conceptual GraphQL schema for the Zoho Mail API. Zoho Mail provides a comprehensive REST API for managing email accounts, folders, messages, contacts...

GRAPHQL

Pricing Plans 1

Published pricing tiers and plan structures.

Zoho Mail Plans Pricing

6 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Zoho Mail Rate Limits

0 limits

RATE LIMITS

FinOps 1

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

Zoho Mail Finops

FINOPS

Security Posture 3

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

Zoho Mail Authentication

oauth2 · 1 scheme

SECURITY

Zoho Mail Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Zoho Mail Vulnerability Disclosure

security.txt · contact published

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Zoho Mail Scopes

11 scopes · authorizationCode

11 scopes

SCOPES

Agentic Access 1

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

Zoho Mail Agentic Access

23 operations · 10 acting

23 operations · 10 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

JSONLD
JSONLD

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrg
GitHubOrg

Access & Security 4

Authentication, authorization, and security posture

VulnerabilityDisclosure
VulnerabilityDisclosure
 DomainSecurity
DomainSecurity
 Authentication
Authentication
 OAuthScopes
OAuthScopes

Operate 2

Status, limits, changes, and where to get help

StatusPage
StatusPage
 RateLimits
RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

Pricing
Pricing
 Plans
Plans
 FinOps
FinOps

Company 4

The organization behind the API

Website
Website
 LinkedIn
LinkedIn
 Blog
Blog
 BlogPosts
BlogPosts

Other 1

Properties that don't map to a standard resource type

X
X

Source (apis.yml)

apis.yml Raw ↑ 
aid: zoho-mail
name: Zoho Mail
description: Zoho Mail is an ad-free, privacy-first email and collaboration platform offering a comprehensive REST API for
  managing email accounts, folders, messages, contacts, calendars, and organizational email administration. The API supports
  15 modules including Organization, Domains, Groups, Users, Mail Policy, Accounts, Folders, Labels, Email Messages, Signatures,
  Threads, Tasks, Bookmarks, Notes, and Logs. Authentication uses OAuth 2.0 and responses are returned in JSON format with
  region-specific base URLs for US, Europe, India, Australia, Japan, Canada, UAE, Saudi Arabia, and China deployments.
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/zoho-mail.png
url: https://raw.githubusercontent.com/api-evangelist/zoho-mail/refs/heads/main/apis.yml
created: '2026-06-13'
modified: '2026-06-13'
specificationVersion: '0.19'
tags:
- Email
- Mail
- Collaboration
- Messaging
- Calendar
- Contacts
- Organization Management
- SaaS
apis:
- aid: zoho-mail:zoho-mail-accounts-api
  name: Zoho Mail Accounts API
  description: Manage email accounts, vacation replies, forwarding, and account settings
  humanURL: https://www.zoho.com/mail/help/api/overview.html
  baseURL: https://mail.zoho.com/api
  tags:
  - Accounts
  properties:
  - type: OpenAPI
    url: openapi/zoho-mail-accounts-api-openapi.yml
  - type: Documentation
    url: https://www.zoho.com/mail/help/api/overview.html
  - type: GettingStarted
    url: https://www.zoho.com/mail/help/api/getting-started-with-api.html
  - type: Authentication
    url: https://www.zoho.com/mail/help/api/using-oauth-2.html
  - type: OpenAPISpec
    url: https://prezohoweb.zoho.com/mail/help/api/openapi-specification.html
  - type: GraphQL
    url: graphql/zoho-mail-graphql.md
- aid: zoho-mail:zoho-mail-folders-api
  name: Zoho Mail Folders API
  description: Create and manage email folders
  humanURL: https://www.zoho.com/mail/help/api/overview.html
  baseURL: https://mail.zoho.com/api
  tags:
  - Folders
  properties:
  - type: OpenAPI
    url: openapi/zoho-mail-folders-api-openapi.yml
  - type: Documentation
    url: https://www.zoho.com/mail/help/api/overview.html
  - type: GettingStarted
    url: https://www.zoho.com/mail/help/api/getting-started-with-api.html
  - type: Authentication
    url: https://www.zoho.com/mail/help/api/using-oauth-2.html
  - type: OpenAPISpec
    url: https://prezohoweb.zoho.com/mail/help/api/openapi-specification.html
  - type: GraphQL
    url: graphql/zoho-mail-graphql.md
- aid: zoho-mail:zoho-mail-messages-api
  name: Zoho Mail Messages API
  description: Send, receive, search, and manage email messages and attachments
  humanURL: https://www.zoho.com/mail/help/api/overview.html
  baseURL: https://mail.zoho.com/api
  tags:
  - Messages
  properties:
  - type: OpenAPI
    url: openapi/zoho-mail-messages-api-openapi.yml
  - type: Documentation
    url: https://www.zoho.com/mail/help/api/overview.html
  - type: GettingStarted
    url: https://www.zoho.com/mail/help/api/getting-started-with-api.html
  - type: Authentication
    url: https://www.zoho.com/mail/help/api/using-oauth-2.html
  - type: OpenAPISpec
    url: https://prezohoweb.zoho.com/mail/help/api/openapi-specification.html
  - type: GraphQL
    url: graphql/zoho-mail-graphql.md
- aid: zoho-mail:zoho-mail-organization-api
  name: Zoho Mail Organization API
  description: Admin-level organization, domain, group, user, and policy management
  humanURL: https://www.zoho.com/mail/help/api/overview.html
  baseURL: https://mail.zoho.com/api
  tags:
  - Organization
  properties:
  - type: OpenAPI
    url: openapi/zoho-mail-organization-api-openapi.yml
  - type: Documentation
    url: https://www.zoho.com/mail/help/api/overview.html
  - type: GettingStarted
    url: https://www.zoho.com/mail/help/api/getting-started-with-api.html
  - type: Authentication
    url: https://www.zoho.com/mail/help/api/using-oauth-2.html
  - type: OpenAPISpec
    url: https://prezohoweb.zoho.com/mail/help/api/openapi-specification.html
  - type: GraphQL
    url: graphql/zoho-mail-graphql.md
common:
- type: AgenticAccess
  url: agentic-access/zoho-mail-agentic-access.yml
- type: VulnerabilityDisclosure
  url: security/zoho-mail-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/zoho-mail-domain-security.yml
- type: Authentication
  url: authentication/zoho-mail-authentication.yml
- type: OAuthScopes
  url: scopes/zoho-mail-scopes.yml
- type: Website
  url: https://www.zoho.com/mail/
- type: Documentation
  url: https://www.zoho.com/mail/help/api/overview.html
- type: GitHubOrg
  url: https://github.com/zoho
- type: LinkedIn
  url: https://in.linkedin.com/company/zoho-mail
- type: Blog
  url: https://blog.zoho.com/mail
- type: Pricing
  url: https://www.zoho.com/mail/zohomail-pricing.html
- type: StatusPage
  url: https://status.zoho.com
- type: X
  url: https://x.com/zohomail
- type: Plans
  url: plans/zoho-mail-plans-pricing.yml
- type: RateLimits
  url: rate-limits/zoho-mail-rate-limits.yml
- type: FinOps
  url: finops/zoho-mail-finops.yml
- type: BlogPosts
  url: blogs/blogs.json
- type: JSONLD
  url: json-ld/zoho-mail.json
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com