Systems Lab

Agent skill

cold-email-20-videos

Write and review cold emails using what the 20 most-watched cold email videos of 2026 actually agree on, weighted by how many of them repeat each rule, and flag the choices they disagree on so you A/B test those instead of trusting one guru.

activeReaches the webInstructions only665 words

Filed under Outbound email.

From ToolMonsters/gtm-skills-from-youtube · 10 skill entries · 6 · pushed 2026-09-14

What it does when it runs

Write and review cold emails using what the 20 most-watched cold email videos of 2026 actually agree on, weighted by how many of them repeat each rule, and flag the choices they disagree on so you A/B test those instead of trusting one guru. Trigger on "write a cold email", "review my cold email", "cold email sequence", or /cold-email.

Automated analysis of the skill and the 1 file bundled beside it. A skill’s own description is written to be selected by an agent, so it describes the job and not the dependencies.

Keys and connectors you must supply
None found.
Hosts it reaches
  • youtu.be
Tool permissions it declares
No allowed-tools in the frontmatter. It only issues instructions, so there is nothing to bound.
Actions present in the files
None. Instructions only.

Ask about cold-email-20-videos

Opens your assistant with this page's verified links already in the prompt.

Is this safe to install?ClaudeChatGPT
Adapt it to my stackClaudeChatGPT
What else do I need for it to workClaudeChatGPT
Rather ask a human? Talk to Cheetah
git clone --depth 1 --filter=blob:none --sparse https://github.com/ToolMonsters/gtm-skills-from-youtube.git /tmp/gtm-skills-from-youtube
git -C /tmp/gtm-skills-from-youtube sparse-checkout set "skills/cold-email-20-videos"
mkdir -p ~/.claude/skills/cold-email-20-videos
cp -R "/tmp/gtm-skills-from-youtube/skills/cold-email-20-videos/." ~/.claude/skills/cold-email-20-videos/

Picked up without a restart. A project skill of the same name is shadowed by your personal one. For one repository only, swap ~/.claude/skills for .claude/skills. Claude Code docs ↗

The folder is the same in every client that implements the format — 46 of them — so if yours is not above, only the destination changes.

Reproduced in full from ToolMonsters/gtm-skills-from-youtube/blob/a31c543ca268778bdf68da1aa956869cb404c86f/skills/cold-email-20-videos/SKILL.md, which is licensed MIT (skill frontmatter). 665 words, 9 headings.

/cold-email

Built from the transcripts of the 20 most-watched cold email videos published between March and September 2026 (203,575 views, 97,000 words). 422 pieces of advice were extracted, 392 were kept because their exact quote was found in the transcript, and they were grouped into 156 distinct rules. The number next to each rule is how many of the 20 videos say it. Sources are in sources.md.

No rule was repeated by more than 9 of the 20. Treat the weights as odds, not laws.

Inputs

  1. What you sell, in one sentence.
  2. Who you are writing to: role, company, and one real detail about them (something they posted, launched, hired for, or complained about).
  3. What you can give for free that is genuinely useful to them.

If input 2 has no real detail, stop and ask for one. A fake detail is worse than none.

The rules, by weight

Strong (6 to 9 of 20)

  • Lead with something free and useful, not a call ask. (9/20) A tailored idea, a short list, a first piece of the work done. Not a PDF, not "hop on a call".
  • Personalize with one real, researched detail. (8/20) If it could be sent to 1,000 people, rewrite it.
  • Keep it short. (7/20) Around 50 to 80 words for the first email. Each sentence earns the next.
  • Test copy and offers continuously. (7/20) Never judge the channel on one variant.
  • Follow up several times, a few days apart. (6/20) Most say 2 to 5 follow-ups.

Solid (4 to 5 of 20)

  • Verify every email before it goes out. (5/20)
  • End with a soft question, like "worth a look?" (5/20)
  • Segment by role and company type, one message per segment. (5/20)
  • Subject lines short, casual, lowercase feel. "quick question, {first name}". (5/20)
  • Recontact non-responders later with a new angle, not the same email. (5/20)
  • First email in plain text, no links. (4/20)
  • Show one proof point: a result, a known customer. (4/20)
  • Target a real signal: hiring, funding, new leader, expansion. (4/20)
  • Do not pitch or ask to close in email one. (4/20)
  • Reply to interested people within minutes. (4/20)

Mentioned (3 of 20)

Simple words, no jargon · build copy from phrases your buyers used on calls · small specific lists beat huge generic ones · never send from your main domain.

Where the experts disagree: do not pick, test

When a draft touches one of these, write two versions and label them A and B.

ChoiceSide ASide B
Calendar linkInclude a link or time slots to cut frictionNever put a calendar link in a cold email
Follow-ups2 to 5 short bumpsOne follow-up only, framed as a new offer
Personalization depthDeep, researched, company-specificLight: over-personalizing email one backfires
CTASoft questionSpecific, easy call ask
VolumeStart small and preciseSend far more than you think

Steps

  1. Read the three inputs. Refuse to invent the personal detail.
  2. Draft email one applying every Strong rule, then the Solid ones that fit.
  3. Count the words. Over 90, cut.
  4. Check it against the list: free value first, one real detail, no link, soft question, no pitch.
  5. If a choice from the disagreement table applies, output version A and version B.
  6. Draft follow-ups only if asked, each with a new angle.
  7. Under the email, list which rules you applied, with their weight, and which choice is being A/B tested.

Never

  • Never claim a reply rate. None of these numbers are yours until you send.
  • Never invent a mutual connection, a compliment, or a detail about the prospect.
  • Never write "I hope this finds you well".

Files bundled with it

These load only when the skill asks for them, so they cost nothing until it runs.

Other skills for the same job

Different authors, same problem. Matched on the words in the skill name, across every library in the catalogue except this one.

Need help setting it up?

This page tells you what cold-email-20-videos does and what it needs. Cheetah builds the agent setup it runs inside: data, CRM, sequencing and the guardrails.

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