Paste your email and describe your ICP. Our AI grades your email on ICP fit, tone, subject line strength, and CTA effectiveness — and tells you exactly what to fix.
—
Overall Score
Top improvement
Dimension scores
5 specific improvements
Rewritten version
See your full analysis
Your complete dimension scores, 5 specific improvements, and a rewritten version of your email — free with a Numi account.
You're on the waitlist — here's what comes next
Numi runs your full GTM strategy through synthetic ICP models before you spend a dollar. Test messaging, sequences, and entire playbooks — not just individual emails. We'll let you know when you're in.
Get your full analysis — all dimension scores, 5 improvements, and a rewritten version of your email — plus early access to Numi when we launch. No card, no noise.
You're joining the Numi early-access waitlist. No spam. Unsubscribe anytime.
How It Works
Enter a description of your target buyer — their job title, company size, and the pain point you're addressing. Choose your conversion goal. Paste your email. Hit analyze.
Our AI evaluates your email across five dimensions: ICP fit (how well your message matches the buyer's context), subject line strength, tone, clarity, and CTA effectiveness. It returns a letter grade, a plain-English summary of the main issue, and a specific improvement suggestion — free, in seconds.
Create a free account to unlock the full report: all five dimension scores with notes, five ranked improvement recommendations, and a rewritten version of your email incorporating every suggestion.
What You'll Get
Free analysis includes your overall grade (A through D), a one-sentence summary of the email's main strength and weakness, and the single highest-leverage improvement you can make today.
Full report (free account required) includes:
ICP Fit score — how well your framing matches your described buyer's context and pain points
Subject Line score — clarity, curiosity, and whether it reads like a template
Tone score — natural vs. formal, appropriate urgency, absence of hype language
Clarity score — is the value prop immediately clear? Is the email too long?
CTA Strength score — specificity, friction, and appropriateness for the ask
Five specific, ranked improvements with exact language suggestions
A fully rewritten version of your email
Why Cold Email Effectiveness Matters
Most cold email problems aren't deliverability problems — they're message-fit problems. Your email reaches the inbox, gets opened, and gets deleted in three seconds. Not because of your domain reputation. Because the first line didn't reference a pain the buyer actually feels right now.
The difference between a 2% reply rate and a 12% reply rate is almost always in the first two sentences and the CTA. Cold emails that land:
Open by naming a specific problem relevant to the buyer's role and current situation
Use the language your buyer uses internally — not your product's marketing language
Keep the ask small and frictionless — a reply, not a 45-minute calendar commitment
Avoid generic social proof; use proof relevant to the specific ICP
Numi evaluates these dimensions automatically. You get the same feedback a seasoned growth advisor would give — without the $500/hour retainer.
Frequently Asked Questions
A cold email lands when it matches the buyer's context, speaks to a pain they're actively experiencing, and makes a small, specific ask. You can test this before sending by analyzing tone, ICP relevance, and CTA clarity. This analyzer evaluates your email across all five dimensions and flags the highest-leverage issue.
The email must name a specific pain point relevant to the buyer's role and industry, avoid generic openers, and use a CTA that matches where they are in their decision process. The best cold emails feel like they were written for one person — even if they weren't. Personalization depth is consistently the highest-impact variable.
A good subject line reads like something a colleague would write — specific, low-hype, and slightly curious. Bad subject lines are generic ("Quick question"), vague ("Thought this might help"), or sound like templates. The best subject lines reference something specific to the recipient's role, company, or a problem they're known to face.
Yes. The basic analysis — grade, summary, and one improvement hint — is completely free. No credit card, no signup. A free account (email only) is required to see the full breakdown: all dimension scores, five specific improvements, and a rewritten version of your email.
A spam checker evaluates technical deliverability — whether your email reaches the inbox. This tool evaluates message-market fit — whether your email will get a reply. Spam checkers don't analyze ICP alignment, personalization depth, or CTA effectiveness. Those are the variables that determine whether a delivered, opened email converts to a conversation.
Related Tools
Also analyze your other GTM content before you publish:
← All Free ToolsLinkedIn Post Analyzer (soon)Ad Copy Analyzer (soon)