MailLinter is a free email testing tool that helps developers test emails before sending them to real users. It provides spam analysis with SpamAssassin, WCAG accessibility checking, email client compatibility testing, and AI-powered deliverability scoring using GPT-4o and Claude that synthesizes all results into prioritized actionable fixes.

How do I install MailLinter?

MailLinter can be installed with a single Docker command: docker run -p 2525:2525 -p 8547:8547 nunomsde/maillinter. It takes less than 30 seconds to set up and requires no configuration. Point your application to localhost:2525 for SMTP and open localhost:8547 to view results.

Is MailLinter free to use?

Yes, MailLinter is completely free to use and all features are currently included, including AI analysis (you provide your own API key). An annual license is planned that will unlock premium features like team sharing and login protection. Core email testing will always remain free.

What email clients does MailLinter test compatibility for?

MailLinter tests email compatibility across 15+ email clients including Gmail, Outlook (desktop and web), Apple Mail, Yahoo Mail, Samsung Mail, and more. It covers approximately 95.7% of the email client market share.

How does AI email analysis work in MailLinter?

MailLinter integrates with OpenAI GPT-4o and Anthropic Claude to provide intelligent deliverability analysis. The AI ingests all test results—spam scores, accessibility issues, compatibility problems—and synthesizes them into a Deliverability Score with prioritized, actionable recommendations ranked by impact.

Cookie Policy | MailLinter

Name: MailLinter
Availability: InStock
Rating: 4.9 (127 reviews)
Author: MailLinter

What Are Cookies

Cookies are small text files that are stored on your computer or mobile device when you visit a website. They are widely used to make websites work more efficiently and to provide information to the owners of the site.

Cookies We Use

The MailLinter website uses minimal cookies:

Cookie	Purpose	Duration
maillinter_cookie_consent	Stores your cookie preference	1 year
_ga, _ga_*	Google Analytics - site usage statistics	2 years

Google Analytics

We use Google Analytics to understand how visitors use our website. This helps us improve the site and content. Google Analytics collects information such as:

Pages visited and time spent on each page
How you arrived at our site (search engine, direct link, etc.)
General location (country/city level)
Device and browser information

Google Analytics cookies are only set if you accept analytics cookies via our consent banner. You can change your preference at any time using the button above.

For more information about how Google uses data, see Google's Privacy Policy.

MailLinter Application

The MailLinter Docker application itself does not use cookies or tracking. It runs entirely locally on your machine and does not communicate with external servers (except when you explicitly enable AI analysis features with your own API keys).

Your Rights Under GDPR

Under the General Data Protection Regulation (GDPR), you have the right to:

Be informed about how your data is used
Access your personal data
Rectify inaccurate data
Request erasure of your data
Restrict processing of your data
Object to processing

Managing Cookies in Your Browser

You can also control cookies through your browser settings. Most browsers allow you to:

View what cookies are stored on your device
Delete all or specific cookies
Block cookies from being set
Set preferences for certain websites

Changes to This Policy

We may update this Cookie Policy from time to time. We will notify you of any changes by posting the new policy on this page and updating the "Last updated" date.

Contact Us

If you have any questions about our use of cookies, please contact us at [email protected]

Cookie Policy

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