Mail-Tester

Mail-Tester checks whether your emails are likely to trigger spam filters.

Updated April 2026

DeliverabilitySales Tools

Overview: What is Mail-Tester?

It delivers a detailed report within minutes so you can fix issues before launching campaigns. The tool is built for teams that depend on reliable inbox placement.

Mail-Tester evaluates your email content, sending server configuration, and IP reputation against multiple spam filters. You send a message to a unique address provided by the platform and receive a scored report highlighting what passes and what needs attention. The report covers SPF, DKIM, and other authentication records alongside content-based spam signals. This makes it useful as a pre-send quality check alongside your existing CRM or email marketing platform. It does not replace a full spam filter or email service provider. It is a focused diagnostic tool that helps you improve deliverability before messages go live.

Fit: Ideal customer profile.

Marketing teams and outbound senders at startups and small to mid-market companies who need to verify inbox placement before campaigns.

Seed
SMB
Mid-market

Capabilities

Key features.

Spam risk scoring for every email

Temporary address for quick testing

SPF record validation and guidance

DKIM record verification

API access for automated checks

Detailed filter-by-filter breakdown

Results available within minutes

Three free tests per 24 hours

Usage

How to use Mail-Tester.

Copy the temporary address generated on the Mail-Tester homepage and send your email to it. Return to the page and click the results link to view your spam score and a breakdown of every check performed. Teams typically run this test before each campaign send to catch configuration or content issues early.

Cost

Pricing.

$8.9

Paid plans start at $8.90 with additional tests and API access. Three free tests are available every 24 hours.

At a glance

Quick facts.

Stack position: Deliverability
Category: Sales Tools
Best for: Seed, SMB, Mid-market
Pricing: From $8.9

Subcategories

Email Spam Tester

Questions

Frequently asked.

How do I run a test with Mail-Tester?

Send your email to the randomly generated address on the homepage. Then click the results link to view your full spam report.

What does Mail-Tester cost?

You get three free tests every 24 hours. Additional tests and API access require a paid plan starting at $8.90.

Why should I use Mail-Tester?

It provides a fast, straightforward way to measure spam risk before you send. The detailed report helps you pinpoint and fix deliverability issues.

What does Mail-Tester actually check?

It runs your email through multiple spam filters and evaluates your sending server, IP, and authentication records. The report shows which checks pass and which need attention.

Is Mail-Tester free to use?

Yes, you can run up to three tests per day at no charge. Reports remain accessible for seven days.

Does Mail-Tester offer a partnership program?

No partnership details are listed on the site. Reach out to their support team directly for any partnership inquiries.

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