The Email Finder API
Find and verify any professional email address by name, company domain, LinkedIn profile, or decision-maker role. Every result is confirmed live via SMTP — no databases, no stale data, no false positives. Pay only for verified emails, starting at €0.009.
What is an email finder API?
An email finder API lets your application discover professional email addresses programmatically. Instead of manually searching LinkedIn or guessing email patterns, you send a request with a person's name and company domain — or a LinkedIn URL, or a role — and the API returns a verified, deliverable email address in seconds.
Most email finder APIs read from a pre-built database of addresses scraped weeks or months ago. emailfinder.dev works differently: it performs live SMTP verification on every single request. The email you get back is confirmed deliverable at the moment you ask. If the mailbox cannot be verified, you get nothing and pay nothing.
Four endpoints, one email finder API
Every endpoint is a simple GET request with Bearer token authentication and a JSON response. Integration takes minutes.
Person Email
1 creditFind a verified email from a full name and company domain.
Company Emails
5 creditsReturn up to 20 verified email addresses for a company domain.
LinkedIn Lookup
1 creditResolve a verified email from any LinkedIn profile URL.
Decision Maker
5 creditsFind a contact by role (CEO, VP Sales, CTO) at any company.
Why real-time verification beats a database
Email data decays fast. People change jobs, companies rebrand, and mailboxes get deactivated. A database-driven email finder API returns whatever it captured the last time it crawled — which means a meaningful percentage of results bounce. In independent testing, database providers returned undeliverable emails 8–11% of the time.
emailfinder.dev connects to the recipient mail server and confirms the mailbox exists before returning the address. The result: zero false positives, a healthier sender reputation, and outbound campaigns that actually reach the inbox. You only pay for the emails that are verified deliverable.
What developers build with it
- · Sales outreach — enrich prospect lists with verified emails before launching sequences.
- · Lead enrichment — fill missing contact data in your CRM automatically.
- · Recruiting — reach candidates directly with verified work emails.
- · CRM integration — keep contact records accurate and deliverable.
- · Company email lookup — find email formats and addresses at any company.
Email finder API FAQ
What is an email finder API?
An email finder API lets your application discover and verify professional email addresses programmatically. You send a name and company domain (or a LinkedIn URL, or a role), and the API returns a verified, deliverable email address. emailfinder.dev verifies every result live via SMTP at the moment of the request, so you never receive stale data.
How accurate is the email finder API?
Because emailfinder.dev verifies every email against the live mail server via SMTP, there are zero false positives. If a mailbox cannot be confirmed as deliverable, the API returns not_found and you are not charged. This is more accurate than database-driven APIs that return emails captured weeks or months ago.
How much does the email finder API cost?
Pricing is pay-as-you-go, starting at €0.009 per verified email. There are no monthly subscriptions and credits never expire. You are only charged when the API returns a verified, deliverable address — failed and not-found lookups are free.
Is there a free email finder API tier?
Yes. You get free credits when you sign up, with no credit card required, so you can test every endpoint before purchasing. The API uses Bearer token authentication and standard REST conventions, so integration takes minutes.
What are the rate limits?
The email finder API supports 1,000 requests per minute on every plan, with atomic credit deduction so parallel lookups never double-charge. This makes it suitable for bulk enrichment and high-volume production workloads.
How is this different from an email verification API?
An email verification API checks whether an email address you already have is deliverable. An email finder API discovers the address in the first place. emailfinder.dev does both in a single call — it finds the email and confirms it is deliverable via SMTP before returning it.
Start with the email finder API free
Free credits included. No credit card required. 1,000 requests per minute.