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Cold Email Spam Checker
Paste a cold email subject and body to check it for common spam-trigger words, too many links, ALL CAPS, exclamation marks, length and personalization tokens. You get a simple score and a list of fixes. It runs entirely in your browser: nothing you paste is sent anywhere or saved.
Checks update as you type. No sign-up, no data stored.
Your score will appear here
Paste a subject and body on the left, or load the example to see how the checker works.
How it works
The checker runs a set of rules over your text in the browser. Each rule that fails takes points off a starting score of 100.
- 01
Spam-trigger words
Looks for phrases that deliverability guides commonly list as spammy, such as “act now”, “100% free”, “click here” and “guaranteed”. Hits in the subject line cost more.
- 02
Links
Counts URLs. One link is fine, two is a warning and three or more is flagged. A link in the subject line is always flagged.
- 03
ALL CAPS
Flags shouted words and all-caps subject lines. Normal business acronyms like CEO, CRM, SDR and B2B are ignored.
- 04
Exclamation marks
Any exclamation mark in the subject, stacked marks like “!!”, or more than two in the body are flagged.
- 05
Length
Checks the subject is present and not too long for mobile, and that the body sits in a readable range for a first touch.
- 06
Personalization tokens
Finds merge tags like {{first_name}}, {company} or [First Name], and catches broken ones like {{first_name} before they reach a prospect.
The score is a writing check, not a deliverability test. Inbox placement also depends on your domain and mailbox setup (SPF, DKIM, DMARC), sending volume, list quality and how recipients engage, none of which this page can see.