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emailfinder.dev

Real-time email discovery API with live SMTP verification

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What is emailfinder.dev?

emailfinder.dev is a real-time email discovery API that finds and verifies professional email addresses. Unlike services relying on stale databases, every lookup performs live SMTP verification at the moment you request it, ensuring 100% deliverability.

Simply call a REST endpoint with a name and domain, a company name, or a LinkedIn profile URL. You only pay when we return a valid, verified email—if we can't find one, the lookup is free. Credits never expire, and the API is built for scale with a 1,000 requests/minute rate limit and a 3-second average response time.

Key features include:

  • Real-time SMTP verification on every lookup
  • Pay only for successful discoveries
  • Endpoints for person, company, LinkedIn, and decision maker
  • REST API with JSON responses and full documentation
  • API dashboard with a playground for quick lookups

Get started with a free API key and integrate in minutes.

How to use emailfinder.dev

  1. 1

    Sign up and obtain your API key from the dashboard.

  2. 2

    Review the API documentation to understand endpoints and parameters.

  3. 3

    Construct a GET request with required fields like full_name and domain.

  4. 4

    Include your API key as a Bearer token in the Authorization header.

  5. 5

    Receive a JSON response with the verified email or no result (no charge).

Key features

Every lookup performs live SMTP verification — no cached databases.

Pay only when we find a valid, deliverable email; not found = free.

Handle up to 1,000 requests per minute with atomic credit deduction.

Credits never expire — buy once, use anytime, no monthly resets.

REST API with GET endpoints, JSON responses, and full Scalar documentation.

Use cases

  • Sales teams enriching prospect lists with verified emails.
  • Recruiters finding candidate contact info by name and company.
  • Marketing platforms automating lead enrichment from LinkedIn profiles.
  • CRMs integrating real-time email verification for new entries.
  • Outbound sales tools validating emails before sending.

Best for

Sales teamsRecruitersLead gen specialistsSaaS developersMarketersIndie hackers

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Frequently asked questions about emailfinder.dev

Common questions to help you decide if emailfinder.dev is right for you.

Yes, you can start for free. Credits never expire, and you only pay when a verified email is found. Sign up to get your API key and begin testing.

emailfinder.dev does not maintain a pre-built database. Every lookup performs live SMTP verification in real time, connecting directly to mail servers to confirm an email’s existence.

By performing a live SMTP handshake for each lookup, we confirm that the mailbox actually exists on the server, eliminating the risk of stale or incorrect data.

While there is no dedicated bulk endpoint, the API supports up to 1,000 requests per minute, allowing for high-volume sequential lookups.

For the latest information, please visit the pricing page or contact support. The page lists a one-time payment option, but specific methods are not detailed.

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