Free tool
Cold Email Grader
Paste a cold email and get an instant 0-100 score with specific fixes — subject line, personalization, length, specificity, spam triggers, CTA, and readability. Runs entirely in your browser. Nothing is uploaded.
Quick answer
A good cold email earns a reply by being relevant before it's persuasive. The strongest ones open with a specific, verifiable reference to the prospect (a launch, a hire, funding, a recent post) instead of a generic greeting; stay short (~50-125 words); make a single, low-friction ask; and avoid spam-trigger words and shouty formatting. This free grader scores your email 0-100 across seven of those dimensions and tells you exactly what to fix — all in your browser, with nothing sent anywhere.
Last updated: June 2026
Tip: include a Subject: line so we can grade it. Press ⌘/Ctrl+Enter to grade.
The seven dimensions
What the grader scores
Each dimension gets a pass / needs-work / fix rating with a one-line fix, weighted into your overall score.
Subject line
Checks length (3-7 words is the sweet spot), vagueness, spammy words, ALL-CAPS, and exclamation overload — the things that decide whether your email is even opened.
Opening personalization
Detects whether you open with a specific, prospect-level reference versus a generic greeting like "Hi there" or "Hope this finds you well."
Body length
Cold emails convert best around 50-125 words. Too short reads low-effort; too long gets skimmed and skipped.
Specificity & evidence
Looks for concrete, checkable detail — numbers, named facts, "I saw / I noticed" references — that proves you did the homework instead of blasting a template.
Spam triggers & tone
Flags salesy trigger words, ALL-CAPS, and exclamation pile-ups that hurt deliverability and make you look like a blast.
Single clear CTA
Confirms there's exactly one low-friction ask. Multiple competing questions (or a hard demo/booking link on a first touch) lower reply rates.
Reading ease
Estimates a Flesch reading-ease score and average sentence length, because a busy reader skims — short, plain sentences win.
What makes a cold email good?
Most cold emails fail for the same reason: they're written before any research is done. The sender knows what they want to say, so they lead with their product, their company, and a generic "Hope this finds you well." The reader has seen a hundred of those and deletes on reflex.
The cold emails that get replies invert that order. They open with something true and specific about the recipient — a product they just launched, a role they're hiring for, a round they just raised, a post they wrote — and connect that detail to a problem the sender can credibly help with. Relevance buys the next two sentences; the ask comes last, and it's small.
That's why this grader weights specificity and personalization most heavily. Length, subject line, tone, a single CTA, and readability all matter — and the grader checks them — but they're refinements on top of the one thing that actually moves reply rates: was this email obviously written for me, using something real about my company?
A high score here means the writing is tight. It can't confirm your opening reference is accurate or that you're emailing the right person — that's on you (or on a tool that does the research). But if you fix every red and amber item below, you'll be writing better cold emails than the overwhelming majority of what lands in a prospect's inbox.
Research-first outreach
The grader checks the writing. ReachAngle fixes the input.
The single biggest lever on a cold email — the specific, verifiable reference it opens with — comes from research, not wordsmithing. ReachAngle reads a prospect's public pages, surfaces the strongest signal with cited evidence, and drafts an evidence-backed email you can edit, copy, or open in Gmail. Score the result here, then send.
FAQ
Common questions
What makes a cold email good?
Relevance first. A good cold email opens by referencing a specific, verifiable detail about the prospect (a launch, a hire, funding, a recent post) rather than a generic greeting, stays concise (roughly 50-125 words), connects that detail to a concrete value, makes one clear low-friction ask, and avoids spam-trigger words and ALL-CAPS. It reads like one person writing to one person.
How does the cold email grader score my email?
It grades seven weighted dimensions: subject line (length, vagueness, spammy words), opening personalization (a specific reference vs a generic "Hi there"), body length (ideal ~50-125 words), specificity and evidence (concrete numbers, named details, "I saw/noticed" references), spam triggers and tone, a single clear call to action, and reading ease. Each gets a pass/needs-work/fix rating with a one-line fix, and they roll up into an overall 0-100 score.
Is my cold email sent anywhere or stored?
No. The grader is 100% client-side — the scoring runs entirely in your browser on the text you paste. Nothing is uploaded, logged, or stored, and there's no account or login. You can disconnect from the internet after the page loads and it still works.
What's the ideal length and subject line for a cold email?
Aim for about 50-125 words in the body — long enough to establish relevance and make an ask, short enough that a busy person reads it. Keep the subject line to roughly 3-7 words and make it specific to that prospect; vague subjects like "Quick question" or "Touching base" get ignored, and spammy or ALL-CAPS subjects hurt deliverability.
Does a high grader score guarantee replies?
No. The grader checks how the email is written — structure, tone, length, clarity. It can't verify that your opening reference is true or that you're emailing the right person. The biggest lever is the input: starting from a real, researched signal about the prospect. That's the part ReachAngle automates.
Is the cold email grader free?
Yes, completely free with no login and no limits. It's a static, in-browser tool. ReachAngle's research-first drafting tool (which reads a prospect's public pages and writes evidence-backed emails) has a free tier of 3 runs per week plus paid plans.