# Email Verifier API

**Canonical:** https://apis.io/providers/email-verifier-api/  
**APIs profiled:** 1

Email Verifier API is a real-time email verification service offering a 16-point engine that validates deliverability through syntax checking, DNS / MX lookups, real-time SMTP handshakes, mailbox existence probing, catch-all and greylisting detection, disposable address detection, role-account flagging, spam-trap and complainer detection, gibberish and offensive-language scanning, B2B / B2C classification, typo correction, and SMTP provider identification. The service is delivered as a single REST endpoint that accepts GET or POST requests, returns JSON or XML, and meters usage against a credit-pack balance that never expires. The product targets growth teams, ESPs, and lead-generation operators that need to eliminate hard bounces and protect sender reputation before they send.

## Kin Score — 57.6 / 100 (strong)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 57.6).

| Facet | Score |
|---|---|
| Discoverability | 75.9 |
| Contract Quality | 69.2 |
| Governance | 26.5 |
| Contract Governance | 26.5 |
| Operational Transparency | 31.6 |
| Developer Ergonomics | 49.4 |
| Commercial Clarity | 77.6 |
| Access Clarity | 77.6 |

## Agent readiness — 42.9 (agent-ready)

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

## Access

Freemium · Open access — onboarding: open, pricing: freemium, trial: no (confidence: high).

## APIs (1)

- **Email Verifier API Verification API** — Real-time email-address verification operations.

## Agentic access (1)

- **Email Verifier Api Agentic Access** — 2 operations · 1 acting

## Security (2)

- **Email Verifier Api Authentication** — apiKey · 1 scheme
- **Email Verifier Api Domain Security** — TLSv1.3 · HSTS

## Plans (1)

- **Email Verifier Api Plans Pricing**

## Use cases (5)

- **Signup Validation** — Block disposable, role, and invalid addresses at registration to keep user lists clean.
- **Pre-Send List Cleaning** — Run marketing lists through verification before a send to lower bounce rate and protect IP / domain reputation.
- **Lead Quality Scoring** — Score inbound leads on B2B vs B2C, role-account, and disposable signals to prioritize sales follow-up.
- **ESP Bounce Prevention** — Reduce hard bounces on transactional and marketing sends to maintain ISP reputation.
- **Typo Recovery at Form Submit** — Use `emailSuggested` to prompt users with the corrected address inline at signup.

## Tags

Email Verification, Deliverability, SMTP Check, Bounce Prevention, Lead Validation, Disposable Detection, Spam Trap Detection, Catch-All Detection, Greylisting, Role Account Detection, Typo Suggestion, B2B Lead Scoring

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