Cold EmailPopular
Cold email writer
You need to write a B2B cold email that gets replies.
You get Three email variants · Subject lines · Why each angle works
Email copy review Claude skill
Use this before a campaign goes out, or when results are poor. It produces a scorecard, exact line-level fixes and a rewrite, judged from the reader's side of the inbox.
- 5-step play
- 3 guardrails
- 2 files
- Human approval built in
Use it when you want an honest review of outreach copy before sending.
Then just ask your agent
“Roast this cold email. Be brutal but useful.”
Watch it work
One request in, expert work out
What happens when you ask your agent with this skill installed. Every step below comes straight from the skill.
You
Roast this cold email. Be brutal but useful.
Loaded skill
email-copy-review- Read it as the recipient
- Score six dimensions
- Quote and fix
- Rewrite
- Diagnose results (if provided)
Scorecard · Line-by-line notes · Rewrite
Ready for your review. Nothing is sent or changed until you approve.
- 5Steps in the play
- 3Guardrails
- 2Files in the skill
- 3 minTo read it all
What good looks like
- Feedback quotes the email; it never says "make it more personal" without showing how.
- Honest but useful: "this reads like a brochure" is followed by the line that proves it and a better line.
- The review separates copy problems from list and deliverability problems.
What you bring
- The email or sequence
- Target persona
- Goal
What you get
- Scorecard
- Line-by-line notes
- Rewrite
name:email-copy-review
description:Use this skill when you want an honest review of outreach copy before sending: "roast my cold email", "review this sequence", "why is nobody replying", "score my email". Scores the email on relevance, clarity,…
Use this before a campaign goes out, or when results are poor. It produces a scorecard, exact line-level fixes and a rewrite, judged from the reader’s side of the inbox.
Inputs
- The email, message or full sequence.
- Who it is for and what it should achieve.
- Results so far, if any.
The play
1. Read it as the recipient
A busy person on a phone, between meetings, who has never heard of you. Note the moment you would stop reading.
2. Score six dimensions
Score each 1-5 using references/review-rubric.md:
| Dimension | Question |
|---|---|
| Relevance | Is it clearly about my situation? |
| Clarity | Do I understand what they do and why it matters to me in one read? |
| Proof | Is there a specific, believable reason to trust the claim? |
| Ask | Is the next step easy and low-commitment? |
| Brevity | Is every sentence earning its place? |
| Deliverability | Does anything look like spam or marketing? |
3. Quote and fix
For every issue, quote the exact line, say why it hurts from the reader’s side, and give the replacement. Prioritise: fix the top three issues first; polishing a weak angle is wasted effort.
4. Rewrite
Return a rewritten version that keeps the sender’s offer and proof. Show the word count before and after.
5. Diagnose results (if provided)
| Symptom | Most likely cause |
|---|---|
| High bounce | List quality, not copy |
| Low replies, few opt-outs | Weak relevance or targeting |
| Replies mostly negative | Offer or ask mismatch, or wrong persona |
| Positive replies but few meetings | Slow or weak reply handling |
| Spam complaints | Volume, targeting or misleading subject |
Output format
Score: <total>/30 | Verdict: send / fix first / rewrite
Top 3 issues: <quoted line - why - fix>
Other notes: <short>
Rewrite (<words before> → <words after>):
<email>What good looks like
- Feedback quotes the email; it never says "make it more personal" without showing how.
- Honest but useful: "this reads like a brochure" is followed by the line that proves it and a better line.
- The review separates copy problems from list and deliverability problems.
- The common mistake is rewriting the whole thing in the reviewer’s voice and losing the sender’s facts and proof.
Rules
- MUST quote the exact line for every criticism.
- MUST keep the sender’s facts, offer and proof in the rewrite.
- NEVER add claims, numbers or customers the sender did not provide.
Example prompts
- "Roast this cold email. Be brutal but useful."
- "Review our 4-step sequence; replies dropped to 1%."
- "Score these three variants and tell me which to send."
Review rubric
Scores
| Dimension | 1 | 3 | 5 |
|---|---|---|---|
| Relevance | Could be sent to anyone | Right role, generic situation | Clearly about this person’s situation or trigger |
| Clarity | Jargon, unclear what is offered | Understandable after two reads | Obvious in one read, plain words |
| Proof | None, or "leading companies" | A vague claim or unnamed customer | Named peer or precise number, approved |
| Ask | 30-60 minute meeting with a stranger, multiple asks | Meeting ask with soft framing | One easy, interest-based question |
| Brevity | 200+ words, paragraphs | 100-150 words | Under 90 words, each line earns its place |
| Deliverability | Links, images, spam words, attachments | One link or minor risk | Plain text, no links, no risky words |
Verdict: 25-30 send, 18-24 fix the top issues first, under 18 rewrite.
Common lines and fixes
| Line | Why it hurts | Fix |
|---|---|---|
| "I hope this email finds you well." | Wasted first line; signals template | Delete; start with the observation |
| "My name is X and I work at Y." | About you; they can see your name | Delete |
| "We are the leading AI-powered platform…" | Unprovable claim, category jargon | State the outcome for them |
| "I wanted to reach out because…" | Filler | Start with the reason itself |
| "Would you be open to a 30-minute call next week?" | High commitment from a stranger | "Worth a look?" |
| "Let me know if you have any questions." | Passive, no question to answer | One specific question |
| "Just following up on my previous email." | Adds nothing | A new angle or value |
Spam-risk phrases to remove
Free, guarantee, risk-free, act now, limited time, click here, 100%, $$$, urgent, winner, "dear friend", all caps words, three or more exclamation marks.
Reading test
Read the email in under 15 seconds. If you cannot say what they offer and what they want from you, clarity is 2 or below.
Try it
Ask your agent like this
Once the skill is installed, plain requests like these load it automatically. Swap in your own company, buyer and numbers.
-
“Roast this cold email. Be brutal but useful.”
-
“Review our 4-step sequence; replies dropped to 1%.”
-
“Score these three variants and tell me which to send.”
What does the Email copy review skill do?
Use this before a campaign goes out, or when results are poor. It produces a scorecard, exact line-level fixes and a rewrite, judged from the reader's side of the inbox. You get: scorecard, line-by-line notes, rewrite.
When should I use the email copy review skill?
Use it when you want an honest review of outreach copy before sending.
How do I install Email copy review in Claude Code?
Run /plugin marketplace add prosyo-ai/gtm-skill and then /plugin install gtm-skills@prosyo to add the whole library, or run npx skills add prosyo-ai/gtm-skill –skill email-copy-review for this skill alone. In Claude.ai, download the .zip from this page and upload it under Settings, Capabilities, Skills.
What do I need to give the agent?
Have these ready: the email or sequence, target persona, goal. If something is missing, the skill tells the agent to ask for it rather than guess.
Does it work with ChatGPT, Codex, Cursor or Gemini?
Yes. The skill is a plain SKILL.md file with no vendor lock-in. Agents that load skills natively (Claude Code, Claude.ai, Codex, Cursor, Gemini CLI and others) pick it up automatically; anywhere else, paste the file into the conversation as instructions.
Will it send emails or messages on its own?
No. Every skill in the library drafts, researches and analyses, and waits for a person to approve anything that sends, schedules or changes records in bulk. Your inbox, CRM and accounts stay under your control.
Is it free, and can I change it?
Yes. It is free and MIT-licensed. Copy it, adapt it to your market and voice, and if you improve it, open a pull request so everyone gets the better version.
Keep going
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Open source
Have a play that works? Share it as a skill.
Paste this into Claude, Codex or any agent. It interviews you about your play, writes the skill in the house format, checks it and opens the pull request. Once it is merged, it shows up here with your name on it.
Prompt for your agent
Fetch https://raw.githubusercontent.com/prosyo-ai/gtm-skill/main/AGENTS.md and follow its submission flow. Interview me about my GTM play (the real numbers, rubrics and examples), draft it in their format with reference pages, validate it and open the pull request.
Two ways to run it
Run it yourself, or put it on autopilot
The skill gives your agent the playbook. Penny, the Prosyo AI SDR, runs plays like this for you every day across LinkedIn and email.
Free · this skill
You and your agentBest for trying the play and one-off work
- Your agent follows the email copy review playbook step by step
- You bring the inputs and run it when you need it
- Works in Claude, Codex, Cursor and 40+ agents
- You review every draft before it goes anywhere
Prosyo AI SDR
Penny runs it for youBest for a pipeline that grows every day
- Finds the right buyers for your ICP every day
- Writes from what each prospect actually posted
- Follows up on LinkedIn and email at a safe, human pace
- Every reply lands in one inbox with an answer drafted
- You approve what goes out
Skills draft the play. Penny runs it.
Penny, the Prosyo AI SDR, finds your buyers, writes from what they actually posted, follows up on LinkedIn and email and lands every reply in one inbox with an answer ready. 7 days free, no card.
- 7 days free
- No card required
- Cancel in two clicks
