FindLeadEmails

FindLeadEmails provides an API to discover and verify professional email addresses. Users can query a person’s name and company domain to receive the most likely work email, which is then checked against the mail server for validity. The service offers bulk lookup, credit‑based pricing, and supports both REST and MCP streaming interfaces. It emphasizes low‑cost verified emails, free handling of catch‑alls and misses, and provides detailed pricing tiers for startups to enterprises.

FindLeadEmails is listed with 1 API on the APIs.io network. Tagged areas include Email Finder, Email Verification, and Bulk Processing.

FindLeadEmails’ developer surface includes authentication, pricing, getting-started guide, API reference, and 14 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

27.2/100 thin Agent 22/100 agent aware Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

AccessPaid

1 API 1 MCP Servers

Email Finder Email Verification Bulk Processing

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 27.2/100 · thin

Contract Quality 0.0 / 21

Developer Ergonomics 6.9 / 17

Access Clarity 10.5 / 17

Operational Transparency 0.0 / 11

Contract Governance 0.5 / 10

Discoverability 4.8 / 9

Regulatory Posture 2.8 / 15

Agent readiness — 22/100 · agent aware

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 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 6 / 6

Protected Resource Metadata 5 / 5

Registration Without a Human 6 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

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):

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document Ask about this →
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author Ask about this →
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) Ask about this →
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes Ask about this →
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 Ask about this →
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented) Ask about this →

8 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 0.0 — up to +25.0 composite points Ask about this →
Operational Transparency scores 0.0 — up to +13.0 composite points Ask about this →
Developer Ergonomics scores 40.5 — up to +11.9 composite points Ask about this →

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.

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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/findleademails-com/apis.yml: open an issue on github.com/api-evangelist/findleademails-com 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 →

Standards implemented 3

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

Model Context Protocol (MCP)

measured — observed by APIs.io (documented)

OAuth 2.0 Protected Resource Metadata

measured — observed by APIs.io (verified)

Dynamic Client Registration

measured — observed by APIs.io (published)

APIs 1

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

FindLeadEmails API

Find and verify B2B work emails. A verified mailbox costs 1 credit. Catch-alls, misses, and repeat lookups are free.

MCP Servers 1

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

FindLeadEmails MCP Server

Remote MCP server at www.findleademails.com requiring OAuth.

MCP SERVER

FindLeadEmails API pricing

Prices published by FindLeadEmails.

Plan	Price
Launch plan	$9/month for 1,000 credits ($0.0090 per credit). Monthly billing. Includes: 1000 credits
Growth plan	$29/month for 5,000 credits ($0.0058 per credit). Monthly billing. Includes: 5000 credits
Scale plan	$69/month for 15,000 credits ($0.0046 per credit). Monthly billing. Includes: 15000 credits
Volume plan	$349/month for 100,000 credits ($0.0035 per credit). Monthly billing. Includes: 100000 credits
500 credit pack	One-off pack: 500 credits for $9. Credits never expire. Includes: 500 credits
2,000 credit pack	One-off pack: 2,000 credits for $29. Credits never expire. Includes: 2000 credits
10,000 credit pack	One-off pack: 10,000 credits for $99. Credits never expire. Includes: 10000 credits
50,000 credit pack	One-off pack: 50,000 credits for $399. Credits never expire. Includes: 50000 credits

Plan details, limits and sources →

Pricing Plans 1

Published pricing tiers and plan structures.

FindLeadEmails Plans Pricing

8 plans

PLANS

OpenAPI Overlays 1

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

FindLeadEmails Openapi Overlay

0 actions · update

UNRECORDED

Security Posture 2

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

FindLeadEmails Authentication

1 scheme

SECURITY

FindLeadEmails Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 3

Portal, sign-up, and the first successful call

Login

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

Documentation 1

Reference material describing how the API behaves

APIReference

APIReference

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

MCPServer

MCPServer

WellKnown

WellKnown

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

Conventions

Conventions

Conformance

Conformance

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Commercial 4

Pricing, plans, and the legal terms of use

Plans

TermsOfService

PrivacyPolicy

Pricing

Company 1

The organization behind the API

Website

Website

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: findleademails-com
name: FindLeadEmails
accessModel:
  pricing: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-13'
  method: derived
image: https://www.findleademails.com/opengraph-image?1ba0ce6194a14622
description: FindLeadEmails provides an API to discover and verify professional email addresses. Users can query a person’s
  name and company domain to receive the most likely work email, which is then checked against the mail server for validity.
  The service offers bulk lookup, credit‑based pricing, and supports both REST and MCP streaming interfaces. It emphasizes
  low‑cost verified emails, free handling of catch‑alls and misses, and provides detailed pricing tiers for startups to enterprises.
url: https://artifacts.apis.io/findleademails-com/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-08 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-11-08'
modified: '2026-11-08'
tags:
- Email Finder
- Email Verification
- Bulk Processing
tags_raw:
- Email Finder
- Email Verification
- API
- Bulk Processing
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Plans
  url: plans/findleademails-com-plans-pricing.yml
- type: Conventions
  url: conventions/findleademails-com-conventions.yml
- type: Authentication
  url: authentication/findleademails-com-authentication.yml
- type: Conformance
  url: conformance/findleademails-com-conformance.yml
- type: LLMsTxt
  url: llms/findleademails-com-llms.txt
- type: MCPServer
  url: mcp/findleademails-com-mcp.yml
- type: WellKnown
  url: well-known/findleademails-com-well-known.yml
- type: Hosts
  url: hosts/findleademails-com-hosts.yml
- type: Vendors
  url: vendors/findleademails-com-vendors.yml
- type: TermsOfService
  url: https://www.findleademails.com/legal/terms
- type: PrivacyPolicy
  url: https://www.findleademails.com/legal/privacy
- type: Pricing
  url: https://www.findleademails.com/pricing
- type: Login
  url: https://www.findleademails.com/login
- type: DeveloperPortal
  url: https://www.findleademails.com/developers
- type: GettingStarted
  url: https://www.findleademails.com/docs/mcp
- type: APIReference
  url: https://www.findleademails.com/docs
- type: DomainSecurity
  url: security/findleademails-com-domain-security.yml
- type: Website
  url: https://findleademails.com/
apis:
- name: FindLeadEmails API
  description: Find and verify B2B work emails. A verified mailbox costs 1 credit. Catch-alls, misses, and repeat lookups
    are free.
  humanURL: https://www.findleademails.com/docs
  baseURL: https://www.findleademails.com
  aid: findleademails-com:findleademails-api
x-enrichment:
  date: '2026-11-08'
  status: enriched
  artifacts_added: 23
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

FindLeadEmails API — frequently asked questions

Does FindLeadEmails have an API?

Yes. APIs.io lists 1 API from FindLeadEmails, including FindLeadEmails API.

How do I authenticate with the FindLeadEmails API?

FindLeadEmails documents its authentication (1 scheme). The details are profiled on APIs.io as FindLeadEmails Authentication.

How much does the FindLeadEmails API cost?

FindLeadEmails publishes its prices; its Launch plan plan is $9/month for 1,000 credits ($0.0090 per credit). Monthly billing. as of 2026-11-08. APIs.io lists 8 pricing plans for FindLeadEmails, with each plan's price, limits and inclusions under Pricing on this page.

Does FindLeadEmails have an MCP server?

Yes. APIs.io lists 1 MCP server for FindLeadEmails: Remote MCP server at www.findleademails.com requiring OAuth.

Is the FindLeadEmails API ready for AI agents?

FindLeadEmails has a Kin Score of 27.2 out of 100 (thin) and an Agent Readiness score of 22.2 (agent-aware), scored by API Evangelist on 2026-11-13.

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