What is MailTester.Ninja?

**MailTester Ninja** is your go-to tool for **checking and finding email addresses** with top-notch accuracy. Whether you're cleaning up your mailing list or hunting for new contacts, it helps **boost deliverability**, **avoid bounces**, and **dodge spam blocks**. Simple, fast, and reliable—no fluff, just results.

What are the features of MailTester.Ninja?

* **Email Checker API**: Verify emails in bulk to keep your list fresh. * **Email Deliverability**: Spot issues like over-quota mailboxes or server errors. * **Finding Emails**: Discover new contacts effortlessly. * **Usage Statistics**: Track how your emails perform over time.

What are the use cases of MailTester.Ninja?

* **Marketers**: Keep your outreach lists clean and effective. * **Sales Teams**: Find valid emails to connect with leads. * **Small Businesses**: Avoid spam traps and improve sender reputation.

How to use MailTester.Ninja?

1. **Drag & drop** text files (TXT, CSV) or paste emails directly. 2. Get instant results—**valid, risky, or invalid**—with clear labels. 3. Use the **API** for automated checks in your workflow.