Help Center | Mailsfinder

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Getting Started

New to Mailsfinder? Learn the fundamentals of email verification and lead discovery.

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Email Finder

Master our domain search, bulk finder, and social profile extraction tools.

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Email Verification

Understanding catch-all emails, deliverability scores, and SMTP verification logic.

DEVELOPER

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API & Integrations

Connect Mailsfinder to your tech stack via REST API, Webhooks, or Zapier.

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Billing & Credits

Manage subscriptions, top-up credits, and understand usage calculations.

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Community & Outbound

Cold email best practices, spam avoidance, and outreach strategies from our community.

Knowledge Base

Developer Quickstart

Build powerful automation workflows with our lightweight REST API. Authenticate via Bearer token and get results in under 500ms.

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check_circle 99.9% Uptime Guarantee

check_circle SDKs for Node, Python, and PHP

Email Finder API

curl --request GET \
  --url 'https://api.mailsfinder.com/v2/search?domain=apple.com' \
  --header 'Authorization: Bearer YOUR_API_KEY'

Email Verification API

curl --request POST \
  --url 'https://api.mailsfinder.com/v2/verify' \
  --header 'Content-Type: application/json' \
  --data '{ "email": "steve@apple.com" }'

Code	Meaning
200	Request successful
401	Invalid API Key
429	Rate limit exceeded
500	Server error

Plan Tier	Rate Limit
Free Tier	10 requests / min
Growth Plan	100 requests / min
Pro Plan	500 requests / min
Enterprise	Unlimited (Custom)

Seamless Integrations

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Direct Node

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Make

App Module

Zapier

Official Integration

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Google Sheets

Extension & API

Frequently Asked Questions

How accurate is the email finder? expand_more

Our finder utilizes real-time verification and machine learning patterns to achieve over 95% accuracy. We only return emails that pass our strict internal deliverability filters.

Do I get charged for 'Unknown' verification results? expand_more

No. Mailsfinder only deducts credits for successful verifications (Deliverable, Undeliverable, or Risky). We do not charge for results we cannot definitively determine.

Can I export my results to a CSV? expand_more

Yes, all bulk search and verification results can be exported as a CSV file directly from your dashboard's 'History' tab.

Is there a limit to how many emails I can verify? expand_more

Limits are based on your credit balance. You can verify as many as you have credits for. High-volume enterprise plans are available for millions of verifications per month.

How do you handle catch-all domains? expand_more

Catch-all domains are identified and flagged as 'Risky'. We use proprietary SMTP heuristics to estimate if an individual address on a catch-all domain actually exists.

What is the refund policy? expand_more

We offer a 7-day money-back guarantee for unused credits if you are not satisfied with the results of your initial testing.

Do you support team collaboration? expand_more

Yes, the Growth and Pro plans allow you to invite team members and share a centralized credit pool and folder structure.

Is Mailsfinder GDPR compliant? expand_more

Fully. We act as a data processor and maintain strict compliance with GDPR and CCPA regulations regarding professional contact information.

How can we help you?