MailTester.AI
Free email deliverability and spam score testerCheck SPF, DKIM, DMARC, and spam risk before sending
Highlights
What you can do with it
- An e-commerce business analyzes promotional emails and optimizes subject lines
- An independent entrepreneur checks a newsletter for spam trigger words
- An educational institution tests enrollment emails and fixes technical settings
How to use it
- 1 Forward a marketing email from your platform to the analysis address
- 2 Wait for the technical analysis report and placement prediction
- 3 Improve the email based on the content and technical suggestions
Who it is for
Pros
- Free of charge
- Technical and content checks in one report
- Actionable repair suggestions for configuration issues
Limitations
- Placement predictions are estimates, not guarantees, because providers decide delivery with their own systems
- Free service availability can change without notice
- Results depend on the email sample you forward
- Technical repairs affect your domain, so apply them carefully and verify
What MailTester.AI is
MailTester.AI is a free email deliverability testing tool. It checks the technical settings of your emails, including SPF, DKIM, and DMARC, and runs a SpamAssassin-based spam score analysis. It also uses AI to predict whether a message is likely to land in the inbox, the promotions tab, or the spam folder, and it reviews content for spam trigger words. The tool suggests rewrites and subject line improvements to raise open rates, and it provides repair guidance for technical problems. The workflow is simple: forward a marketing email to the analysis address and read the report. The product was named Product of the Day on Product Hunt.
What you can do with it
- Check SPF, DKIM, DMARC, and DNS settings
- Get a spam score and inbox placement prediction
- Receive content rewrites and subject line suggestions
- Follow technical repair guidance for configuration issues
Who it is for
- Email marketers running regular campaigns
- Corporate marketing teams sending promotional email
- Small business owners managing their own newsletters
What to watch out for
The tool is free of charge, so availability and limits can change without notice. Placement predictions are estimates based on analysis, not guarantees, because inbox providers decide delivery with their own systems. Results depend on the email sample you forward, so test the actual message you plan to send. Technical repairs such as DNS changes affect your domain, so apply them carefully and verify after making updates. Generated suggestions are for reference only, so verify anything that affects professional judgment or important data. Start with a small sample to confirm the output meets your expectations before processing the full batch.
FAQ
Is MailTester.AI free?
Yes. It is free of charge.
What does it check?
It analyzes SPF, DKIM, and DMARC settings, runs a spam score analysis, and predicts inbox placement.
How do I use it?
Forward a marketing email to the analysis address and review the report it returns.
Why it is free
What the official page says： free of charge
Free limits, trial length and features are decided by the official site and can change at any time.
Product preview
Screenshot archived from the listing page, for preview only.
