MailTester Ninja

What MailTester Ninja is

MailTester Ninja checks email addresses, finds contact emails, and offers a REST API for verification in other solutions. The verifier reports each address as Accepted, Rejected, or Unverifiable. Users can provide text or lists in different formats; the tool extracts addresses and removes duplicates. On desktop, users can upload address lists, then export results as CSV or copy them into a spreadsheet. The email finder takes a full name and a domain to search for a corresponding contact address.

MailTester Ninja is available on the web, macOS, Windows, and through an API. The API can connect to services such as CRMs and email marketing tools. The Pro plan allows 100,000 emails and API calls per day; Ultimate allows 200,000 of each. Requests over a plan’s daily quota are refused until the quota resets the next day. The homepage describes a free checker and verifier, and the verifier page offers a paid Pro upgrade. The pricing page says paid access starts at $6.99. Pro is listed at $23.99 a month and Ultimate at $39.99 a month. The company says submitted addresses are processed temporarily and deleted after analysis. Its finder permits lawful individual lookups and prohibits harvesting or bulk extraction.

Who it suits

MailTester Ninja suits people who need to verify email addresses, check lists on desktop, or connect verification to another service through an API. Its email finder is for individual lookups using a full name and domain; the company prohibits harvesting and bulk extraction.

Limits

The free checker and verifier have paid upgrades available. Pro allows 100,000 emails and API calls per day, while Ultimate allows 200,000 of each; requests above a plan’s daily limit are refused until the quota resets the next day.

Getting started

1. Visit https://mailtester.ninja/.
2. Use the free checker or verifier, or select a paid plan.
3. Enter email addresses as text or a list; on desktop, upload an address list if needed.
4. For API integration, connect the REST API to a solution such as a CRM or email marketing tool.
5. For an individual lookup, provide a full name and domain to the finder.

Verdict

Choose MailTester Ninja if you need address verification, desktop list handling, an API, or individual name-and-domain searches. Check the daily email and API quotas when choosing a paid plan, and use another approach if you need bulk email finding.