Works with Kit (ConvertKit)

Spam Score Checker for Kit (ConvertKit): Free Browser-Based Tool

Q: Is there a free way to spam-trigger analysis for Kit (ConvertKit) campaigns?

Yes. The MiN8T Spam Score Checker below runs entirely in your browser — no signup, no upload, and the output works with any Kit (ConvertKit) workflow.

→ Open the free Spam Score Checker

Browser-only, no signup, no upload. Output works with any Kit (ConvertKit) campaign.

Built by the MiN8T Engineering Team · Updated 28 May 2026

MiN8T Spam Score Checker interface preview

Kit (ConvertKit)'s built-in tools cover the basics, but the spam score checker workflow often benefits from a dedicated, browser-only preprocessor before uploading. Pre-send spam-trigger analysis catches issues before they impact your sender reputation. Free rule-based scoring combined with a Naive Bayes classifier identifies precisely which content triggers fire.

Why pre-process before uploading to Kit (ConvertKit)

Kit's pre-send check is rule-based and surfaces high-risk content. Detailed rule-by-rule scoring identifies precisely which triggers fire.

Step-by-step: spam-trigger analysis for Kit (ConvertKit)

Paste your campaign HTML into the free spam score checker below
60+ rules evaluate subject patterns, body keywords, header completeness, link density, HTML structure, image-to-text ratio, and authentication signals
A Naive Bayes classifier trained on 50,000+ labeled messages provides a complementary spam-probability score
Review the rule-by-rule breakdown and fix triggers before sending via Kit (ConvertKit)

Kit (ConvertKit)-specific deliverability quirks to know

Kit (formerly ConvertKit) ships with their own deliverability monitoring. Their visual editor enforces a clean text-heavy aesthetic that performs well in Gmail's primary tab.

Frequently asked questions

Does Kit (ConvertKit) include a built-in spam score checker?

Kit (ConvertKit) provides basic functionality but lacks granular control. Kit's pre-send check is rule-based and surfaces high-risk content. Detailed rule-by-rule scoring identifies precisely which triggers fire.

Is there a free way to spam-trigger analysis for Kit (ConvertKit) campaigns?

Yes. The free MiN8T Spam Score Checker runs entirely in your browser — no signup, no upload, no rate limits. The output is a standard file you can upload directly to Kit (ConvertKit).

What image size limit does Kit (ConvertKit) enforce?

Kit (ConvertKit) accepts uploads up to 1000 KB per image and recommends a max width of 600px for email body width. Supported formats: JPG, PNG, GIF.

Does Kit (ConvertKit) verify SPF, DKIM, and DMARC automatically?

Kit handles SPF + DKIM authentication via their sending domain. Custom DKIM signatures require their Creator Pro plan.

What about subject line analysis for Kit (ConvertKit)?

Kit's subject line tester previews across clients but does not score spam triggers or sentiment quantitatively. Use the free subject line analyzer for length scoring, spam-trigger detection, and sentiment analysis before pasting into Kit (ConvertKit).

Related free tools

While preparing your Kit (ConvertKit) campaign, you may also want:

Image Compressor — also free, browser-based, optimized for email marketers
GIF Compressor — also free, browser-based, optimized for email marketers
CSS Inliner — also free, browser-based, optimized for email marketers
Inbox Preview — also free, browser-based, optimized for email marketers