Works with Brevo

Spam Score Checker for Brevo: Free Browser-Based Tool

Q: Is there a free way to spam-trigger analysis for Brevo campaigns?

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

→ Open the free Spam Score Checker

Browser-only, no signup, no upload. Output works with any Brevo campaign.

Built by the MiN8T Engineering Team · Updated 28 May 2026

MiN8T Spam Score Checker interface preview

Brevo'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 Brevo

Brevo's pre-send check is binary (likely spam / probably fine) without exposing the specific triggers. Detailed rule-based scoring catches deliverability issues earlier.

Step-by-step: spam-trigger analysis for Brevo

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 Brevo

Brevo-specific deliverability quirks to know

Brevo (formerly Sendinblue) maintains a free tier with 300 emails/day. Their internal deliverability score is calculated post-send; pre-send hygiene is your responsibility.

Frequently asked questions

Does Brevo include a built-in spam score checker?

Brevo provides basic functionality but lacks granular control. Brevo's pre-send check is binary (likely spam / probably fine) without exposing the specific triggers. Detailed rule-based scoring catches deliverability issues earlier.

Is there a free way to spam-trigger analysis for Brevo 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 Brevo.

What image size limit does Brevo enforce?

Brevo accepts uploads up to 2000 KB per image and recommends a max width of 600px for email body width. Supported formats: JPG, PNG, GIF.

Does Brevo verify SPF, DKIM, and DMARC automatically?

Brevo requires DNS verification (SPF + DKIM) before sending. DMARC monitoring is offered in their paid tiers only.

What about subject line analysis for Brevo?

Brevo offers basic subject line preview across clients but no spam-trigger lexicon, length scoring, or sentiment analysis. Use the free subject line analyzer for length scoring, spam-trigger detection, and sentiment analysis before pasting into Brevo.

Related free tools

While preparing your Brevo 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