Free tool
Cold email audit
Paste a cold email and get an instant score with specific fixes — before you send it to 500 prospects. We check length, spam words, links, tone, your ask and the subject line.
What a good cold email looks like
The best-performing cold emails are short (around 50-125 words), lead with something relevant to the prospect rather than about you, avoid spam-trigger words and hype, keep links to a minimum, and end with one specific, low-pressure ask. This tool checks each of those signals so you can fix the email before it costs you a domain.
How to read your score
The number is a triage signal, not a verdict. Treat it as three bands:
Below 50. Something structural is wrong — usually length, link count, or a tone that reads as a broadcast. Emails in this range rarely fail because of one bad word; they fail because the shape of the message announces "this went to a list". Fix the flagged structural items first and re-run before touching wording.
50 to 75. The mechanics are sound and the remaining problems are about relevance. This is the band where most drafts land, and where the score stops being useful — a technically clean email that opens with a generic observation about the recipient's industry will score well and still get ignored. Read the opener out loud and ask whether it could have been sent to a hundred other companies unchanged.
Above 75. Nothing in the copy is working against you. Whether it gets replies now depends on list quality, offer relevance and whether your domain is actually reaching the inbox — none of which this tool can see.
What each signal means
Length. Long cold emails ask for a commitment before earning it. The practical ceiling is what fits on a phone screen without scrolling — most replies come from emails that a busy person can finish in one glance.
Spam-trigger words. Weighted deliberately low. Word choice matters far less than folklore suggests; modern filters weigh sender reputation and engagement much more heavily. We flag only the phrasing patterns that still correlate with low-quality senders — see why most "spam word" lists are obsolete.
Links. Every link is a reason for a filter to look harder and a reason for a reader to postpone. One is usually the maximum a first touch can carry; zero is often better.
Tone. Capitals, exclamation marks and superlatives read as advertising. B2B buyers respond to the register of a colleague, not a campaign.
The ask. A first email should request one small, specific thing. "Worth a short call next week?" outperforms "let me know if you'd like to learn more" because it is answerable in one word.
Prospect focus. Count the sentences about them versus about you. If the ratio favours you, the email is a brochure.
Subject line. Short, lower-case, specific. Anything that reads like a headline reads like marketing.
What this tool does not check
Being explicit about the limits, because a high score can create false confidence:
It does not test deliverability. A perfect email from a domain with broken authentication lands in spam regardless. Run the DNS deliverability check for the record side, and the spam test to see what a receiving server actually does with a real message.
It does not judge list quality. The strongest email sent to the wrong people produces nothing, and no copy tool can tell you whether your targeting is sharp — that is what an ICP review is for.
It does not evaluate your offer. If the underlying proposition is unclear or uncompelling, tightening the copy makes the problem easier to see, not smaller.
What to do after the audit
Fix the structural flags first, then rewrite the opener, then re-run. Two rounds is usually enough; past that you are polishing rather than improving. When the score stops moving, the remaining gains are in targeting and infrastructure, not in wording — the copywriting framework covers what to do with the message itself, and the deliverability guide covers everything underneath it.
Frequently asked questions
What does the cold email audit check?
It scores your email 0-100 on the things that decide replies and deliverability: length, spam-trigger words, number of links, tone (shouting/caps), whether there's a clear ask, whether it's prospect-focused, and your subject line.
Is it free?
Yes — free, no signup, and your email never leaves your browser. The analysis runs client-side.
What makes a cold email get replies?
A relevant, prospect-first opener, a short body (roughly 50-125 words), no spam-trigger words, a calm tone, one clear low-pressure ask, and clean sending infrastructure behind it.