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Companies / MailTester Ninja

MailTester Ninja tech stack

mailtester.ninja

MailTester Ninja provides an email verifier and email finder that check addresses in real time and store nothing. It serves companies and business contacts for list cleaning, lead generation, and deliverability.

Summarized from its homepage on 7 Nov 2026.

Classified asMarketing

The MailTester Ninja homepage

Vendors of MailTester Ninja and the evidence for each

VendorCategoryEvidenceLevel
Google AnalyticsAnalyticsConfirmed
Privacy policyProcesses data for the company7 Nov 2026Source
Websitescript: ;s.src="https://www.googletagmanager.com/gtag/js?id=G-S7CKES1BJQ";s.async=true;document.head.a7 Nov 2026Source
Companies using Google Analytics
CloudflareCloud and infrastructureLikely
Websiteheader: cf-ray: a56bfb26be39cf72-SJC7 Nov 2026Source
Companies using Cloudflare
AnthropicAI and LLM providersPossible
Privacy policyNamed as Claude7 Nov 2026Source
Companies using Anthropic
ChatGPTAI and LLM providersPossible
Privacy policy7 Nov 2026Source
Companies using ChatGPT
Google Apps ScriptPossible
Privacy policy7 Nov 2026Source
Google SheetsPossible
Privacy policy7 Nov 2026Source

No public list found

We did not find a public subprocessor list. The company may still publish one, or share it privately.

Questions about MailTester Ninja

Does MailTester Ninja use Anthropic?

Vendor's own statement, retrieved from the source URL on the date shown. StrataDB does not verify the underlying claim. Data sources.

See MailTester Ninja's full stack

Every vendor with its source and date, and an alert when MailTester Ninja adds or drops one. The same lookup works for any company.

  • Every company and vendor, with its public source
  • 100 API calls a month, plus MCP and the Chrome extension
  • Work email only. No card, no sales call