Score the whole email
Review the subject line and body against the factors that influence attention and replies.
Paste in your email and get a clear score, evidence inside your copy, and practical reasons why prospects may not reply.
The offer is unclear and the opening focuses on you, not the reader.
Main issue foundYour opening asks for attention before giving the reader a reason to care.
Watch how the Free Email Grader reviews a cold email and turns vague advice into specific evidence.
Get a structured review that shows what works, what weakens your message, and where your biggest opportunities sit.
Review the subject line and body against the factors that influence attention and replies.
Keep the strongest parts of your message instead of replacing everything and hoping for the best.
Find unclear offers, weak relevance, unnecessary friction and calls to action that ask too much.
View your current score beside a projected improved score, without exposing the rebuilt Pro email.
The grader connects every score to evidence inside your original email, so you can see exactly what needs attention.
Before and projected after
Evidence in your original email
Hi Sarah,
I wanted to introduce our leading platform which helps companies improve efficiency across their sales process.
We offer a wide range of features and would love to book 30 minutes to show you everything.
Are you free next Tuesday?
Each part of your cold email receives a score from 1 to 5. The percentages show how much each part contributes to the overall score.
Is this email clearly for this person right now, rather than a message anyone could have received?
Does it open on a problem the reader recognises, instead of opening on you, your company or your product?
Is there one clear, low-effort next step that suits a relationship that is still cold?
Is there a reason to believe you, such as a comparable customer or a real number, rather than an unsupported claim?
Can someone read it on a phone in one pass? Aim for roughly 50 to 125 words and one main idea.
Does it sound like a normal internal email, and does the body deliver on what the subject promises?
The grader uses a defined scoring rubric informed by research into how people respond to email, sender guidance and established direct response principles.
Experimental findings across email and related persuasion settings inform the principles behind the feedback.
Reported samples across Gong, Outbound Squad, Yesware, Boomerang, Belkins and Hunter total roughly 296 million sent emails.
Google, Yahoo and Microsoft sender requirements inform delivery guidance. Apple Mail Privacy Protection informs how open-rate claims are interpreted.
Established writing principles add a practical lens to relevance, proof, clarity and the ask.
What “informed by” means: the grader reviews the email you paste against the six criteria above. It does not look up your email in those publishers’ underlying datasets or predict your reply rate.
The 296 million figure adds together reported sample sizes, including analyses that may share emails. It is not a count of unique emails. A pasted message also cannot verify your domain setup or guarantee inbox placement.
Explore selected published analyses: Gong, Outbound Squad / 30MPC, Yesware, Boomerang, Belkins and Hunter. Some analyses cover email beyond cold outreach; the publishers do not endorse this product.
Add the Email Grader to Claude using the simple installation guide.
Include the subject line, message and any useful context about your audience.
See the evidence, understand the problems and decide what to improve before sending.
Start with the free report. If you want Claude to rebuild the email for you, Email Grader Pro unlocks the complete output.
Get a useful diagnosis before you decide what to change.
Turn the diagnosis into a stronger, copy-ready email.
Download the Free Email Grader, run your first review and find the specific problems that may be costing you replies.
Download the Free Email Grader ✓ See the optional Pro upgrade first