Email Spam Checker AI-Powered

Q: Why do I need to provide an API key?

We use a 'Bring Your Own Key' (BYOK) model. This ensures that the tool remains free without restrictive limits, and it guarantees that you remain in full control of your own data and usage quotas directly through Google.

Analyze email copy & maximize inbox deliverability

Email Content Editor Live Scanner

Subject Line * 0 chars

Email Body * 0 words

Ready for Inspection

Enter your email content on the left, then run the diagnostic to scan for trigger words, ISP filter risks, and generate high-deliverability clean copies.

Your key stays in your browser. We never store it.

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Deliverability Score

Lower is better. Scores over 50 indicate a high risk of hitting the spam folder or promotional tabs.

Executive Summary

Build Your Email List Without Stitching Tools Together

Create lead pages, capture subscribers, and follow up from one simple list-building setup.

Show Me the System

How to Use & FAQs

What is this tool?

The Email Spam Checker is a free, AI-powered diagnostic tool designed to help marketers, founders, and sales teams maximize their inbox deliverability. It scans your email copy for aggressive trigger words, analyzes structural formatting that modern ISP filters hate, and provides actionable recommendations (and clean alternative copy) to ensure your emails actually reach your audience.

How it works

1 Get your Free Key: Click the Settings (gear) icon in the top right to paste your Google Gemini API Key. (Don't have one? There is a link to get one for free).
2 Draft your Email: Type or paste your subject line and email body into the editor on the left. The live scanner will instantly warn you of basic hardcoded trigger words.
3 Run Diagnostic: Click the "Run Deep AI Diagnostic" button. The AI will analyze the contextual tone and risk profile of your email.
4 Apply Fixes: Review the dashboard tabs on the right to apply automated fixes, swap out subject lines, or replace your entire draft with the AI Cleaned Version.

Frequently Asked Questions

Is this tool free to use?

Yes! The tool interface is entirely free. You simply need to provide your own Google Gemini API key, which currently has a very generous free tier provided by Google.

Why do I need to provide an API key?

We use a "Bring Your Own Key" (BYOK) model. This ensures that the tool remains free without restrictive limits, and it guarantees that you remain in full control of your own data and usage quotas directly through Google.

Are my email drafts or data saved?

No. We do not store your API key or your email copy on our servers. Your API key is securely saved locally in your own browser, and your email text is passed directly to Google's AI for analysis and immediately discarded.

How accurate is the diagnostic?

The AI uses the Gemini 3.5 Flash model, which has been instructed to act as a deliverability expert. While it is highly accurate at identifying modern spam patterns and contextual clickbait, it is a simulation. It cannot guarantee 100% inbox placement, as ultimate deliverability also depends heavily on your domain reputation and email sending history.

Action successful

Email Spam Checker AI-Powered

Email Content Editor Live Scanner

Ready for Inspection

Analyzing Email Copy...

Deliverability Score

Executive Summary

Detected Spam Trigger Words

Simulated ISP Filter Results

Actionable Recommendations

Optimized Subject Lines

AI Cleaned Version

Build Your Email List Without Stitching Tools Together

Email Content Editor Live Scanner

Ready for Inspection

Analyzing Email Copy...

Deliverability Score

Executive Summary

Detected Spam Trigger Words

Simulated ISP Filter Results

Actionable Recommendations

Optimized Subject Lines

AI Cleaned Version

Build Your Email List Without Stitching Tools Together

How to Use & FAQs

What is this tool?

How it works

Frequently Asked Questions

Is this tool free to use?

Why do I need to provide an API key?

Are my email drafts or data saved?

How accurate is the diagnostic?

API Settings

Sample Templates

Scan History