The Ultimate Email Discovery Tool for Growth

Three Growth-Ready Discovery Modes

From surgical single lookups to industrial-scale CSV processing, Mailsfinder adapts to your growth velocity.

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Targeted Discovery

Find the exact decision-maker at any company. Enter a name and domain, get a verified email in under 200ms. Perfect for account-based selling.

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Bulk Discovery Engine

Upload prospect lists with 10K+ rows. Our engine discovers and verifies emails in parallel — turning raw lead lists into campaign-ready data in minutes.

Start Bulk Discovery

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Discovery API

Build email discovery into your growth stack. REST API with 200ms latency, native n8n, Make, and Zapier connectors for automated prospecting workflows.

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Discovery Engine: How It Works

Unlike database-only tools, Mailsfinder discovers emails in real-time using multi-source intelligence and SMTP verification.

01

input

Submit Targets

Provide names and company domains — single lookup or bulk CSV upload.

02

database

Multi-Source Discovery

Our engine queries premium data providers and public records simultaneously in real-time.

03

verified_user

Real-Time Verification

Multi-step SMTP handshake, MX record validation, and pattern analysis confirm deliverability.

04

analytics

Growth-Ready Output

Verified emails with confidence scores, ready to export to your CRM or outreach tool.

From Lead List to Launched
Campaign in Minutes

Growth doesn't wait. Upload your target list, let the discovery engine process thousands of contacts, and export verified emails ready for Instantly, Smartlead, or Lemlist.

1

Upload Target List

Drop your CSV file with prospect names and domains into our secure dashboard.

2

Parallel Discovery & Verification

Our engine discovers and verifies thousands of emails simultaneously with real-time SMTP checks.

3

Export to Your Outreach Stack

Download verified leads ready for Instantly, Smartlead, Lemlist, or any outreach platform you use.

Built for Growth Teams That Operate at Scale

Every feature is designed to maximize your outbound velocity while keeping bounce rates under 1%.

100K

Credits/Month

99%

Verified Accuracy

$0.001

Cost Per Email

200ms

API Latency

Feature	Mailsfinder	Hunter	Snov.io	Apollo
Credits (at ~$99/mo)	100,000	2,000	5,000	Unlimited*
Cost Per Email	$0.001	$0.024	$0.020	$0.01
Verification Method	Real-time SMTP	Pattern-based	7-tier SMTP	Database Only
Bounce Rate	<1%	~5-10%	~3-5%	Variable

Built for Growth Engineers

A simple, powerful API that turns a name and domain into a verified lead. Programmatic outreach at its most efficient.

api

Native REST

JSON responses for easy parsing. 200ms latency.

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n8n & Make

Pre-built blocks for low-code automation.

sync

Zapier

Connect 5,000+ apps in seconds.

security

GDPR Ready

Compliance-first data sourcing.

cURL Request

curl --request POST \

--url https://api.mailsfinder.com/v1/find \

--header 'Authorization: Bearer YOUR_KEY' \

--data '{

"full_name": "Sarah Johnson",

"domain": "salesforce.com"

}'

Transparent Pricing. No Hidden Fees.

100K verified emails for $99/mo. That's $0.00099 per credit.

Pro

$49 /mo

10,000 credits (finder + verifier)

check_circle Single & Bulk Finder
check_circle Email Verification
check_circle CSV Export
check_circle CRM Integrations

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Who Uses Mailsfinder's Email Discovery Engine?

groups

SDRs & BDRs

Build hyper-accurate prospect lists for personalized outreach that converts at 2-3x industry average.

campaign

Agencies

Scale lead generation for multiple clients without burning your domain reputation. Unlimited team members.

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Founders

Find decision-makers at target accounts in minutes. Close your first 10 customers faster.

code

Growth Engineers

Automate data enrichment flows using our high-throughput API with 200ms latency.

Frequently Asked Questions

What makes Mailsfinder an 'email discovery' tool vs a regular email finder? expand_more

Most email finders rely on pre-built, static databases that go stale within weeks. Mailsfinder is a real-time discovery engine — it actively searches across multiple premium data sources, public records, and pattern intelligence at the moment you request an email. This means you get fresh, verified results instead of cached data that may have bounced months ago. Every email is confirmed live via SMTP handshake before it reaches you.

How does Mailsfinder help growth teams specifically? expand_more

Growth teams need volume, speed, and reliability. Mailsfinder delivers all three: 100K credits per month for just $99, sub-200ms API response times for programmatic workflows, and 99% verified accuracy to keep bounce rates under 1%. Plus, native integrations with n8n, Make, Zapier, and Google Sheets let you plug email discovery directly into your existing growth stack — no engineering time required.

Can I integrate Mailsfinder into my existing growth stack? expand_more

Absolutely. Mailsfinder offers a full REST API with 200ms latency for custom integrations. We also provide native connectors for n8n, Make (formerly Integromat), Zapier, and Google Sheets. This means you can trigger email discovery from a CRM event, enrich spreadsheets automatically, or build end-to-end prospecting workflows without writing a single line of code. The API is available on the $99/mo Agency plan.

What's the difference between email finding and email discovery? expand_more

Email finding typically means looking up an email in a pre-existing database — you're limited to whatever was crawled and stored weeks or months ago. Email discovery is a real-time, multi-source process. Mailsfinder queries premium data providers, analyzes domain patterns, and performs live SMTP verification simultaneously. The result is a fresher, more accurate email that hasn't been sitting in a stale database waiting to bounce.

How fast can I process a list of 10,000 prospects? expand_more

Minutes, not hours. Mailsfinder's bulk discovery engine processes thousands of rows in parallel — discovering and verifying emails simultaneously across multiple data sources. A 10,000-row CSV typically completes in under 10 minutes. Simply upload your file, let the engine run, and download your verified, campaign-ready list when it's done.

Your Growth Stack Is Incomplete
Without Real-Time Email Discovery.

Join 5,000+ growth teams discovering 100K+ verified emails per month for just $99.

Start Free Trial Book a Private Demo

The Ultimate Email Discovery Tool Built for Growth