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How MailTester.Ninja CEO John MacAdams grew MailTester.Ninja to $220K revenue with a 2 person team in 2025.

MailTester.Ninja is a free and easy-to-use email checker that verifies or finds any address. A leading platform in the realm of email verification and discovery. As an advanced mail tester, we offer comprehensive solutions to ensure the accuracy and deliverability of your emails. Our email checker functionality is designed to validate your recipients in real-time, reducing bounce rates and increasing the efficiency of your marketing campaigns. By verifying each recipient address, MailTester.Ninja helps maintain the integrity of your sender reputation, preventing your emails from being flagged as spam. Moreover, as an effective email finder, MailTester.Ninja aids in expanding your outreach. Discover new potential contacts and leads with our sophisticated search tools, designed to explore and identify valid contacts that align with your business needs. At MailTester.Ninja, we are committed to enhancing your communication strategies. Whether you are looking to clean up your existing mailing list, prevent fraud, or comply with GDPR, our tools are tailored to meet your requirements. Embrace the power of a reliable mail tester, email checker, and email finder with MailTester.Ninja unlimited and take your e-marketing campaigns to the next level.

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MailTester.Ninja Revenue

In 2025, MailTester.Ninja's revenue reached $220K. Since its launch in 2018, MailTester.Ninja has shown consistent revenue growth.

MailTester.Ninja Revenue GrowthReported revenue / ARR by year$0$50K$100K$150K$200K$250K20182019202020212022202320242025$0$220KSource: GetLatka.com
YearMilestone
2025MailTester.Ninja Hit $220k revenue in July 2025
2018Launched with $0 revenue

MailTester.Ninja Valuation, Funding Rounds

MailTester.Ninja's most recent disclosed valuation is $660K.

MailTester.Ninja is a bootstrapped Email Deliverability Tools startup. Founded in 2018, MailTester.Ninja has grown to $220K in revenue without raising any venture capital or outside funding.

As a self-funded Email Deliverability Tools SaaS company, MailTester.Ninja has built its business with no outside investment.

MailTester.Ninja Capital Raised & ValuationCumulative capital raised and post-money valuation by roundCapital raised (cum.)Valuation$0$120182018 cumulative: $0 • 2018 Founded: $02018 Founded: $0 valuationSource: GetLatka.com
YearRoundAmountValuation% Sold

MailTester.Ninja Employees & Team Size

MailTester.Ninja employs approximately 2 people as of 2026.

MailTester.Ninja has 2 total employees in different roles and functions.

MailTester.Ninja Team GrowthReported headcount over time011223201820192020202120222023202420250022Source: GetLatka.com
YearMilestone
2025Reached 2 employees (July 2025)

Founder / CEO

John MacAdams

John MacAdams is listed as Founder / CEO at MailTester.Ninja.

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Customers

We do not have customer count information for MailTester.Ninja yet.

Frequently Asked Questions about MailTester.Ninja

What is MailTester.Ninja's revenue?

MailTester.Ninja generates $220K in revenue.

Who is the CEO of MailTester.Ninja?

The CEO of MailTester.Ninja is John MacAdams.

How much funding does MailTester.Ninja have?

MailTester.Ninja raised $0.

How many employees does MailTester.Ninja have?

MailTester.Ninja has 2 employees.

Where is MailTester.Ninja headquarters?

MailTester.Ninja is headquartered in London, England, United Kingdom.

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Compare MailTester.Ninja to the industry

MailTester.Ninja operates across multiple industries. Browse revenue, funding, and growth data for MailTester.Ninja in each sector below.

Source Attribution

Source: all data was collected from GetLatka company research and founder interviews. Revenue, funding, team, and customer figures are presented as company-reported or GetLatka-estimated metrics where the profile data identifies them that way.

Company data last updated .

MailTester.Ninja Revenue 2025: $220K ARR, $660K Valuation