# ZeroBounce

**Canonical:** https://apis.io/providers/zerobounce/  
**Website:** https://www.zerobounce.net  
**APIs profiled:** 6

ZeroBounce is an email validation and deliverability platform that verifies email addresses, detects spam traps and abuse accounts, scores leads, and helps senders reduce bounce rates and protect sender reputation. The platform provides real-time and batch email validation, credit balance checks, file-based validation jobs, email finder, domain search, activity data, list evaluation and AI scoring through a versioned REST API. The ZeroBounce v2 API uses a per-request api_key parameter with no OAuth or scopes, and is served from region-split hosts for US and EU data residency plus a separate bulk host for asynchronous file jobs. ZeroBounce also ships an official MCP server and first-party SDKs across nine languages.

## Kin Score — 69.5 / 100 (exemplar)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 69.5).

| Facet | Score |
|---|---|
| Discoverability | 81.5 |
| Contract Quality | 51.0 |
| Governance | 30.3 |
| Contract Governance | 30.3 |
| Operational Transparency | 84.2 |
| Developer Ergonomics | 78.0 |
| Commercial Clarity | 92.1 |
| Access Clarity | 92.1 |

## Agent readiness — 42.8 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | documented |
| Auth Clarity | yes |
| 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 |

## Access

Freemium self-service — onboarding: unknown, pricing: freemium, trial: yes (confidence: high).

## APIs (6)

- **ZeroBounce Email Validation API** — Real-time and batch email validation API including credit balance, API usage, file submission and retrieval, email finder, domain search, activity data and AI scoring endpoints....
- **ZeroBounce Email Validation API (US)** — US-region endpoint of the ZeroBounce v2 email validation API. Introduced October 2025 alongside the EU host so that, per ZeroBounce's own documentation, "validations and other i...
- **ZeroBounce Email Validation API (EU)** — EU-region endpoint of the ZeroBounce v2 email validation API for customers requiring European data residency, where validations and interactions occur only within the European U...
- **ZeroBounce Bulk API** — Asynchronous file-job surface for bulk email validation, bulk AI scoring, bulk email finder, bulk domain search, List Evaluator and Amazon S3 file operations. Runs on a separate...
- **ZeroBounce Validation API** — The ZeroBounce ChatGPT-plugin validation surface — 2 operations for single and batch email validation, served from members-api.zerobounce.net. The single-validation operation ac...
- **ZeroBounce MCP Server** — Official ZeroBounce Model Context Protocol server, published by ZeroBounce under Apache-2.0 and distributed on npm as @zerobounce/mcp. Exposes 16 tools covering validation, AI s...

## MCP servers (1)

- **ZeroBounce MCP Server** — Official ZeroBounce Model Context Protocol server. Exposes ZeroBounce email validation, AI scoring, email finder, domain search, activity data, credit and bulk-file operations a...

## Agentic access (1)

- **Zerobounce Agentic Access** — 2 operations · 2 acting

## Security (4)

- **Zerobounce Authentication** — 3 schemes
- **Zerobounce Domain Security** — TLSv1.3 · HSTS · DNSSEC · DMARC
- **Zerobounce Vulnerability Disclosure** — Intigriti
- **Zerobounce Trust Center** — SOC 2, ISO 27001, PCI DSS, HIPAA, GDPR

## Plans (1)

- **Zerobounce Plans Pricing**

## Tags

Email Validation, Email Deliverability, Email Verification, Marketing, Lead Scoring, Anti-Spam, Data Quality, Email Finder, Deliverability Monitoring, DMARC

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