In this tutorial, you’ll learn how to find and verify professional email addresses using MailTester.Ninja


We’ll show you step by step how to use our email finder feature to quickly identify valid business contacts perfect for outreach, lead generation, or customer follow-ups.

In this video, you’ll see how to:

  • Enter a domain or company name to find associated email addresses

  • Verify each result in real time to ensure accuracy

  • Export your verified leads safely and efficiently

Whether you’re a sales professional, marketer, or recruiter, MailTester.Ninja makes it easy to build targeted and verified contact lists without wasting time or damaging your sender reputation.

Watch the tutorial below to see how it works in action.

Find and Verify Professional Emails with MailTester.Ninja

Building a reliable contact list is one of the biggest challenges in digital marketing and sales outreach.
Sending emails to the wrong or invalid addresses doesn’t just waste time it also hurts your deliverability, damages your sender reputation, and lowers your conversion rates.

That’s why having a tool that can find and verify emails efficiently is essential.
With MailTester.Ninja, you can identify and validate business email addresses in just a few clicks helping you connect with the right people while keeping your campaigns clean, compliant, and effective.

What Is Email Finding and Why It Matters

Email finding is the process of discovering the professional email addresses of potential clients, partners, or leads.
It’s a crucial step for B2B marketing, sales prospecting, and recruitment.
However, many “email finders” provide raw data without confirming if those addresses are still valid which leads to high bounce rates and poor campaign results.

MailTester.Ninja solves this by combining email discovery and real-time verification.
Every address found is automatically checked through our email verification engine, which uses SMTP validation, DNS/MX record analysis, and domain risk scoring to confirm deliverability.

The result: you get a verified email list that’s accurate, clean, and ready to use without wasting resources or damaging your sender score.

The Benefits of Using MailTester.Ninja to Find Emails

Using MailTester.Ninja for your email discovery and verification brings multiple advantages:

  1. Higher Deliverability Rates
    Eliminate invalid and fake addresses before sending. Your emails reach more inboxes, not spam folders.

  2. Better Campaign ROI
    Every verified contact increases the value of your marketing spend and improves your response rates.

  3. Improved Sender Reputation
    By avoiding bounces and spam traps, your domain remains trusted by major email providers like Gmail, Outlook, and Yahoo.

  4. Time and Cost Efficiency
    Find and validate hundreds (or thousands) of emails in minutes no manual work required.

  5. GDPR-Compliant Data Handling
    MailTester.Ninja processes all data securely, never stores personal information permanently, and follows strict European privacy standards.

Every successful outreach campaign starts with accurate, verified data.
MailTester.Ninja’s email finder and verifier helps you identify and connect with real people faster, smarter, and more reliably.

Don’t waste time sending to invalid inboxes.
Use MailTester.Ninja to find, verify, and organize your contacts with confidence and watch your deliverability and engagement soar.

FAQ – Finding and Verifying Emails with MailTester.Ninja

1. What is the purpose of MailTester.Ninja’s email finder?

MailTester.Ninja’s email finder helps you discover and verify professional email addresses quickly and accurately. It’s designed for marketers, sales professionals, and recruiters who need to build verified contact lists without wasting time or risking high bounce rates.

2. How does MailTester.Ninja verify the emails it finds?

Each email found through MailTester.Ninja is automatically verified in real time. The platform performs SMTP checks, DNS and MX record lookups, domain reputation scoring, and catch-all detection to confirm whether the email address is valid, risky, or invalid before you export it.

3. Can I use MailTester.Ninja for large email discovery campaigns?

Yes. MailTester.Ninja is built to handle both small and large-scale email searches efficiently. You can find and verify hundreds or even thousands of addresses in a single session—perfect for lead generation, cold outreach, and marketing automation workflows.

4. Why is it important to verify emails before sending a campaign?

Verifying emails before sending helps you reduce bounce rates and spam complaints, protect your sender reputation, improve deliverability and inbox placement, and increase your overall campaign ROI. A clean, verified list ensures your messages reach real, active recipients.

5. Is MailTester.Ninja compliant with GDPR and data privacy standards?

Yes. MailTester.Ninja is fully GDPR-compliant. All data is processed securely, encrypted during verification, and never stored permanently. The platform follows strict principles of privacy, data minimization, and transparency.

6. Who can benefit from using the MailTester.Ninja email finder?

MailTester.Ninja is ideal for marketers building outreach lists, sales teams sourcing new leads, recruiters finding accurate candidate contact info, agencies maintaining clean databases, and businesses improving communication efficiency.

7. How often should I use MailTester.Ninja to verify my email lists?

Verify your lists every 2–3 months or before launching any major email campaign. Regular verification keeps your data fresh, your deliverability high, and your sender reputation strong.