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Email Spam Checker

Find the spam triggers in an email before you send it.

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Spam risk

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What was flagged

Quick Tool Overview

The Email Spam Checker scans a subject line and body for spam trigger words, shouting capitals, excessive punctuation and link problems, then returns a risk score with specific named fixes.

What it does
Finds the content signals that push email towards a junk folder
You give it
A subject line and email body
You get back
A risk score with every trigger named and a fix for each
Best for
Checking a marketing email before it goes out
Marketing Tools Free, unlimited use No sign-up Runs in your browser

About the Email Spam Checker

Spam filters do not read an email the way a person does. They weigh signals — trigger words, the ratio of shouting capitals, exclamation marks, how much link there is compared to text — and a marketing email that leans on all of them at once can land in a junk folder no matter how good the offer is.

Paste your subject line and body, and this tool checks them against a built-in list of well-known trigger words, measures the capitals and punctuation ratios, counts links against word count, and looks for the classic image-heavy-with-no-text pattern.

Every finding names the actual word or the actual number and says what to do about it, so you get "the word FREE in capitals is a common filter trigger — try free in sentence case" rather than an unexplained score out of ten.

Key features of the Email Spam Checker

Named triggers, not a bare score

Each finding says which word or ratio caused it and what to change.

Subject checked separately

Subject-line triggers are weighted more heavily than body ones.

Ratio checks

Capitals, exclamation marks and link-to-text balance are all measured.

Runs in your browser

Your email content never leaves your device.

How to use the Email Spam Checker

  1. 1

    Paste the subject line

    Subject triggers carry more weight than body ones, so it is checked separately.

  2. 2

    Paste the email body

    Plain text or pasted HTML both work.

  3. 3

    Read the risk score

    Low, medium or high, with every contributing signal listed.

  4. 4

    Apply the named fixes

    Each finding names the specific word or ratio and what to change it to.

Frequently asked questions

No, and any tool claiming otherwise is overselling. Content is only part of deliverability — sender reputation, SPF, DKIM, DMARC, list hygiene and past engagement all matter as much or more. This checks the content half, which is the part you can fix in the draft.

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