grabmail-io

GrabMail.io provides free disposable email addresses with a simple REST API. Users can generate temporary inboxes, read messages, and delete them without registration. The service auto‑deletes emails after five days, offers custom domain support, and includes rate limits of 60 requests per minute for free users. It targets developers needing quick email verification in CI pipelines or testing environments.

grabmail-io publishes 3 API contracts indexed on the APIs.io network, including Account API, Mailbox API, and 1 more. Tagged areas include Company, Email, Temporary, API, and DeveloperTools.

The grabmail-io catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

grabmail-io’s developer surface includes authentication, documentation, API reference, getting-started guide, pricing, support, engineering blog, and 16 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

53.0/100 developing Agent 35/100 agent ready Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

1 published contract 1 MCP Servers

Company EmailTemporaryAPIDeveloperTools

Kin Score

Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0

Composite quality — 53.0/100 · developing

Contract Quality 11.9 / 21

Developer Ergonomics 8.1 / 17

Access Clarity 10.2 / 17

Operational Transparency 0.0 / 11

Contract Governance 8.1 / 10

Discoverability 5.5 / 9

Regulatory Posture 3.7 / 15

Agent readiness — 35/100 · 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 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

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

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 could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

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/.

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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
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks
Documented Reversibility +6 pts — a reversal operation in the contract, graded up when a window is documented too

6 more unmet checks in the Agent Readiness table above.

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

Operational Transparency scores 0.0 — up to +13.0 composite points
Contract Quality scores 56.2 — up to +11.0 composite points
Developer Ergonomics scores 47.6 — up to +10.5 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/grabmail-io/apis.yml: open an issue on github.com/api-evangelist/grabmail-io 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 →

APIs 3

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

GrabMail API

Disposable email API providing temporary inboxes, message retrieval and deletion via REST.

grabmail-io Account API

What an API key opens. A key follows its account's plan on every call: on the free plan it counts the free allowance per account instead of per IP address; on a paid plan it rem...

grabmail-io Mailbox API

Read and empty a disposable inbox.

MCP Servers 1

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

grabmail-io MCP Server

Remote MCP server at grabmail.io.

MCP SERVER

Pricing Plans 1

Published pricing tiers and plan structures.

Grabmail Io Plans Pricing

4 plans

PLANS

Semantic Vocabularies 1

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

Grabmail Io Context

5 classes · 35 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

grabmail-io API Rules

14 rules · 12 errors 1 warnings 1 info

SPECTRAL

Security Posture 2

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

Grabmail Io Authentication

http · 1 scheme

SECURITY

Grabmail Io Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

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

Grabmail Io Agentic Access

6 operations · 1 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

LLMsTxt

LLMsTxt

MCPServer

MCPServer

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

ErrorCatalog

Conformance

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 4

Pricing, plans, and the legal terms of use

Plans

Pricing

TermsOfService

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: grabmail-io
name: grabmail-io
image: https://grabmail.io/assets/img/og-card.png
description: GrabMail.io provides free disposable email addresses with a simple REST API. Users can generate temporary inboxes,
  read messages, and delete them without registration. The service auto‑deletes emails after five days, offers custom domain
  support, and includes rate limits of 60 requests per minute for free users. It targets developers needing quick email verification
  in CI pipelines or testing environments.
url: https://artifacts.apis.io/grabmail-io/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-30 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-30'
modified: '2026-10-30'
tags:
- Company
- Email
- Temporary
- API
- DeveloperTools
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/grabmail-io-agentic-access.yml
- type: Plans
  url: plans/grabmail-io-plans-pricing.yml
- type: Spectral
  url: rules/grabmail-io-rules.yml
- type: JSONLD
  url: json-ld/grabmail-io-context.jsonld
- type: Vocabulary
  url: vocabulary/grabmail-io-vocabulary.yml
- type: DataModel
  url: data-model/grabmail-io-data-model.yml
- type: ErrorCatalog
  url: errors/grabmail-io-problem-types.yml
- type: Conformance
  url: conformance/grabmail-io-conformance.yml
- type: LLMsTxt
  url: llms/grabmail-io-llms.txt
- type: MCPServer
  url: mcp/grabmail-io-mcp.yml
- type: Hosts
  url: hosts/grabmail-io-hosts.yml
- type: Vendors
  url: vendors/grabmail-io-vendors.yml
- type: Authentication
  url: authentication/grabmail-io-authentication.yml
- type: DomainSecurity
  url: security/grabmail-io-domain-security.yml
- type: Website
  url: https://grabmail.io/
- type: Documentation
  url: https://grabmail.io/docs
- type: APIReference
  url: https://grabmail.io/openapi.json
- type: GettingStarted
  url: https://grabmail.io/docs/quickstart
- type: Pricing
  url: https://grabmail.io/pricing
- type: TermsOfService
  url: https://grabmail.io/legal/terms
- type: PrivacyPolicy
  url: https://grabmail.io/legal/privacy
- type: Support
  url: https://grabmail.io/status
- type: Blog
  url: https://grabmail.io/guides
apis:
- name: GrabMail API
  description: Disposable email API providing temporary inboxes, message retrieval and deletion via REST.
  humanURL: https://grabmail.io/docs/api
  baseURL: https://grabmail.io
  aid: grabmail-io:grabmail-api
- aid: grabmail-io:grabmail-io-account-api
  name: grabmail-io Account API
  description: 'What an API key opens. A key follows its account''s plan on every call: on the free plan it counts the free
    allowance per account instead of per IP address; on a paid plan it removes the caps and opens the premium pool.'
  humanURL: https://grabmail.io/docs/api
  baseURL: https://grabmail.io
  tags:
  - Account
  properties:
  - type: OpenAPI
    url: openapi/grabmail-io-account-api-openapi.yml
- aid: grabmail-io:grabmail-io-mailbox-api
  name: grabmail-io Mailbox API
  description: Read and empty a disposable inbox.
  humanURL: https://grabmail.io/docs/api
  baseURL: https://grabmail.io
  tags:
  - Mailbox
  properties:
  - type: OpenAPI
    url: openapi/grabmail-io-mailbox-api-openapi.yml
x-enrichment:
  date: '2026-10-30'
  status: enriched
  artifacts_added: 20
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

grabmail-io API — frequently asked questions

Does grabmail-io have an API?

Yes. APIs.io lists 3 APIs from grabmail-io, including GrabMail API, grabmail-io Account API and grabmail-io Mailbox API.

Is there an OpenAPI specification for the grabmail-io API?

Yes. APIs.io indexes 2 OpenAPI specifications for grabmail-io, each linked for download from this page.

How do I authenticate with the grabmail-io API?

grabmail-io uses bearer-token authentication (http · 1 scheme). The details are profiled on APIs.io as Grabmail Io Authentication.

How much does the grabmail-io API cost?

APIs.io lists 4 pricing plans for grabmail-io, with each plan's price, limits and inclusions under Pricing Plans on this page.

Does grabmail-io have an MCP server?

Yes. APIs.io lists 1 MCP server for grabmail-io: Remote MCP server at grabmail.io.

Is the grabmail-io API ready for AI agents?

grabmail-io has a Kin Score of 53.0 out of 100 (developing) and an Agent Readiness score of 34.7 (agent-ready), scored by API Evangelist on 2026-10-31.

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