# isBusinessEmail

**Canonical:** https://apis.io/providers/isbusinessemail/  
**Website:** https://isbusinessemail.com  
**APIs profiled:** 1

isBusinessEmail provides a free API to determine whether an email address or domain belongs to a business, detecting Google Workspace and Microsoft 365 usage. The service offers up to 100 free checks per day, stores no email data, and is EU‑hosted, making it suitable for privacy‑focused applications. Users can obtain an API key instantly without a credit card, and the platform includes tools, lists, and integrations for developers.

## Kin Score — 57.0 / 100 (strong)

Scored 2026-10-09 under rubric 0.23.0.

| Facet | Score |
|---|---|
| Discoverability | 66.1 |
| Contract Quality | 53.4 |
| Contract Governance | 79.1 |
| Operational Transparency | 68.9 |
| Developer Ergonomics | 47.6 |
| Access Clarity | 34.2 |

Regulatory layer — **Horizontal (data, software, accessibility, platform)**: 30.4 (matched via fallback).

## Agent readiness — 47.0 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | unknown |
| Reversibility Documented | no |
| MCP Server | documented |
| Auth Clarity | served |
| Idempotency | no |
| Error Semantics | derived |
| OpenAPI Examples | partial |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |
| Delegated Identity | served |
| Protected Resource Metadata | verified |
| Dynamic Client Registration | yes |
| Agentic Commerce | no |

## APIs (4)

- **isBusinessEmail Check API** — The Check API from isBusinessEmail — 2 operation(s) for check.
- **isBusinessEmail Feedback API** — The Feedback API from isBusinessEmail — 1 operation(s) for feedback.
- **isBusinessEmail Health API** — The Health API from isBusinessEmail — 1 operation(s) for health.
- **isBusinessEmail Usage API** — The Usage API from isBusinessEmail — 1 operation(s) for usage.

## Agentic access (1)

- **Isbusinessemail Agentic Access** — 6 operations · 3 acting

## Security (3)

- **Isbusinessemail Authentication** — apiKey/http · 2 schemes
- **Isbusinessemail Domain Security** — TLSv1.3 · HSTS · DMARC
- **Isbusinessemail Vulnerability Disclosure** — security.txt · contact published

## Tags

Company, EmailVerification, BusinessTools, API, EUHosted

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/isbusinessemail/). Scores are computed from the provider's own public artifacts under a published rubric.