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MailTester.AI

Free

Will your newsletter actually land in the inbox?

MarketingFreeFree tier
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Type
Saas
Company
MailTester.ai
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About MailTester.AI

MailTester.ai is an AI-powered email analysis tool designed to help users understand and improve their email performance. It instantly analyzes newsletters, marketing campaigns, or community emails, providing actionable insights to boost engagement, open rates, and conversions. The platform offers a free email deliverability test, including comprehensive checks for SPF, DKIM, and DMARC, and identifies why emails might land in spam folders. Beyond technical validation, MailTester.ai's AI analyzes content quality, suggests improvements, optimizes subject lines, and predicts inbox placement, ultimately aiming to enhance overall email deliverability and marketing effectiveness.

How to Use

To use MailTester.ai, follow a simple 3-step process:

  1. Forward Your Email: Send any marketing email from platforms like Mailchimp, Substack, ConvertKit, or any other service to the unique analysis address provided (e.g., leaping-jellyfish-1178@in.mailtester.ai).
  2. Get Analysis & Predictions: Instantly receive a comprehensive report that includes technical analysis, AI predictions for spam, promotions, and inbox placement, and a deliverability score.
  3. Improve & Optimize: Apply the AI-generated content suggestions and technical fixes detailed in the report to boost your email deliverability score and ensure your emails reach the inbox.

Key Features

  • AI-powered content analysis and suggestions
  • Comprehensive technical analysis (SPF, DKIM, DMARC, DNS)
  • SpamAssassin spam score analysis
  • Inbox placement forecast (AI Predictions)
  • Subject line optimization
  • Content rewriting suggestions
  • Deliverability score (0-100)
  • Actionable recommendations for fixes

Use Cases

  • Testing newsletters before sending to subscribers to ensure inbox delivery.
  • Analyzing marketing campaigns to identify and fix deliverability issues.
  • Checking community emails for spam triggers and optimizing content.
  • Identifying and resolving SPF, DKIM, and DMARC configuration problems.
  • Optimizing email content and subject lines to improve open rates and conversions.
  • Understanding why emails go to spam and implementing preventative measures.

Key Features

AI-powered content analysis and suggestions
Comprehensive technical analysis (SPF, DKIM, DMARC, DNS)
SpamAssassin spam score analysis
Inbox placement forecast (AI Predictions)
Subject line optimization
Content rewriting suggestions
Deliverability score (0-100)
Actionable recommendations for fixes

Pros & Cons

Pros
  • Free unlimited scoring with no login required
  • Tests on real Gmail, Outlook, and Yahoo inboxes
  • Clear, actionable fixes in priority order
  • AI rewrites that match your writing voice
  • EU-hosted with GDPR compliance and auto-deletion
  • One-click cancel on paid plans
  • 30-day money-back guarantee for paid plans
  • Works with all major ESPs and any platform with 'send test'
Cons
  • AI deep-dive features require credits or monthly subscription (starting €4.99/4 deep-dives)
  • Does not check email address validity (focuses only on inbox placement of a single email)
  • Limited to testing one email at a time (no bulk upload)
  • Free tier only includes score, placement, and server checks; rewrites require payment

Best For

Testing newsletters before sending to subscribers to ensure inbox delivery.Analyzing marketing campaigns to identify and fix deliverability issues.Checking community emails for spam triggers and optimizing content.Identifying and resolving SPF, DKIM, and DMARC configuration problems.Optimizing email content and subject lines to improve open rates and conversions.Understanding why emails go to spam and implementing preventative measures.

Alternatives to MailTester.AI

FAQ

Do you store the email I forward?
The test mailbox auto-deletes after the report finishes. We never store the raw email body beyond what the report references — subject line, header metadata, and the classification result. EU-hosted in Bratislava, GDPR by default.
How is this different from GlockApps / MailReach?
Those tools focus on inbox-placement warm-ups and bill per seed list per month. MailTester.ai does one thing — you forward one email, we tell you where it'll land and what to fix. Pay-as-you-go credits or a light €9.99/mo plan instead of heavy seat-based subscriptions, EU-hosted, and built for platforms like Beehiiv, Kit, and Substack.
When does billing start?
Only when you buy credits or start the €9.99/mo plan. Forwarding an email and reading the score is genuinely free — no card collected, no trial countdown, no automatic upgrade.
How do I cancel?
Same screen you upgrade on, one click. We don't make you email us, talk to a chatbot, or wait for end-of-cycle. Your remaining month stays active; we don't re-bill.
What do I actually pay for?
Forwarding an email and getting the score, plain-English verdict, inbox placement, and SPF/DKIM/DMARC server checks is free and unlimited. The paid unit is the AI deep-dive (full AI breakdown with rewrites), which costs 100 credits. A €4.99 pack gives 499 credits (~4 deep-dives); €9.99/mo gives 1,100 credits (~11 deep-dives).
What's the refund policy?
30-day money-back, no questions asked. If your first paid month doesn't help you ship a better send, email hello@mailtester.ai and we refund the charge.