# Kickbox

**Canonical:** https://apis.io/providers/kickbox/  
**Website:** https://kickbox.com  
**APIs profiled:** 5

Kickbox is an email verification and list cleaning service that helps senders improve deliverability by detecting invalid, disposable, role-based, and risky email addresses before they enter mailing lists. The platform offers real-time single verification, bulk batch verification, and a deliverability monitoring suite. Kickbox provides a simple HTTPS REST API authenticated by API key returning structured verification results with reason codes.

## Kin Score — 57.9 / 100 (strong)

Scored 2026-08-25 under rubric 0.14.0. Trend: flat (+0.0 from 57.9).

| Facet | Score |
|---|---|
| Discoverability | 81.5 |
| Contract Quality | 60.5 |
| Governance | 16.7 |
| Contract Governance | 16.7 |
| Operational Transparency | 47.4 |
| Developer Ergonomics | 62.5 |
| Commercial Clarity | 69.7 |
| Access Clarity | 69.7 |

## Agent readiness — 31.3 (agent-ready)

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

## Access

Self-serve signup — onboarding: self-serve, pricing: unknown, trial: no (confidence: medium).

## APIs (5)

- **Kickbox Email Verification API** — REST API for verifying the deliverability of email addresses in real time. Returns a result (deliverable, undeliverable, risky, unknown), a reason code, plus flags for role addr...
- **Kickbox Account API** — Account balance and metadata.
- **Kickbox Batch API** — Bulk CSV email verification.
- **Kickbox Open API** — Free disposable-domain lookup (no auth).
- **Kickbox Verification API** — Real-time email verification.

## MCP servers (1)

- **Kickbox documentation MCP server (auth-gated)**

## Agentic access (1)

- **Kickbox Agentic Access** — 5 operations · 1 acting

## Security (3)

- **Kickbox Authentication** — apiKey/http · 2 schemes
- **Kickbox Domain Security** — TLSv1.3 · HSTS · DMARC
- **Kickbox Trust Center** — SOC 2, GDPR, CCPA

## Plans (1)

- **Kickbox Plans Pricing**

## Tags

Email Verification, Email Validation, Deliverability, Data Quality, Email

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