cold-email

cold-email is a skill for Claude Code from DariuszCiesielski/polish-agent-skills. It costs 81 tokens per session (2,054 once invoked), scanned A, original, MIT.

A guide for writing cold-email campaigns, meaning unsolicited emails sent to potential customers. It covers personalised first emails, follow-ups, break-up emails, and testing different versions.

In plain words
What is it for?
Use it to write or improve prospecting emails, build follow-up sequences, personalise messages, and prepare alternative versions for testing.
Why use it?
It gives outreach messages a clear structure and keeps them focused on the recipient’s problem and a simple next-step question.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the polish-sales-skills plugin — 10 skills shipped together

Good fit Use it to write or improve prospecting emails, build follow-up sequences, personalise messages, and prepare alternative versions for testing.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/dariuszciesielski/polish-agent-skills/cold-email
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add DariuszCiesielski/polish-agent-skills --skill cold-email
Clone the repo
git clone --depth 1 https://github.com/DariuszCiesielski/polish-agent-skills

Made for: Claude Code.

Or install polish-sales-skills, the plugin that ships this one along with the rest of its 10 skills.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for cold-email

README.md
[![agentmods](https://agentmods.dev/badge/skills/dariuszciesielski/polish-agent-skills/cold-email/github.svg)](https://agentmods.dev/skills/dariuszciesielski/polish-agent-skills/cold-email)
Your own site
<a href="https://agentmods.dev/skills/dariuszciesielski/polish-agent-skills/cold-email"><img src="https://agentmods.dev/badge/skills/dariuszciesielski/polish-agent-skills/cold-email/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for cold-email

Your own site · 80×15
<a href="https://agentmods.dev/skills/dariuszciesielski/polish-agent-skills/cold-email"><img src="https://agentmods.dev/badge/skills/dariuszciesielski/polish-agent-skills/cold-email.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 81 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,054 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00081 $0.02054
Opus 5 $0.00041 $0.01027
Sonnet 5 $0.00016 $0.00411
Haiku 4.5 $0.00008 $0.00205

Measured 11d ago against content hash 1ae7570b8a17, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

cold-email scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 11d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/sales/cold-email/SKILL.md · 208 lines

How it starts

The opening of the file, as written. The whole thing — 208 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Cold Email — Outreach Sequences dla SaaS

Generuje spersonalizowane sekwencje cold email. Od researchu prospekta po follow-up i break-up email.

Kiedy używać

  • Planujesz kampanię cold email do potencjalnych klientów
  • Chcesz poprawić istniejące szablony (niski response rate)
  • Potrzebujesz sekwencji follow-up
  • Użytkownik mówi: "cold email", "outreach", "napisz email do klienta"

Zależności

  • Wymagane: sales-contexticp-sales.md, value-prop.md, proof-points.md
  • Opcjonalne: voice-profile → ton komunikacji, lead-generator → lista prospektów

Anatomia skutecznego cold email

Subject line (otwarcie)

  • Max 6 słów polskich (4-5 idealnie)
  • Personalizacja: imię, firma, branża
  • Bez: RE:, FWD:, emoji, CAPS, "oferta", "współpraca"
  • Wzorce: pytanie, obserwacja, mutual connection

Body (treść)

[1 zdanie — dlaczego piszę KONKRETNIE do Ciebie]
[1-2 zdania — problem który rozwiązuję]
[1 zdanie — dowód (case study, liczba)]
[1 zdanie — CTA (pytanie, nie prośba)]

Max 80 słów. Każde słowo musi pracować. Krótszy = lepszy.

CTA (wezwanie do akcji)

  • Pytanie (nie prośba): "Czy to jest problem u Was?" > "Czy możemy porozmawiać?"
  • Niskie zobowiązanie: "15 min" > "spotkanie"
  • Konkretne: "Czy wtorek 10:00 pasuje?" > "Kiedy masz czas?"

Sekwencja 5-email (framework)

Email 1: Initial (Dzień 0)

Cel: Wzbudzić ciekawość, nie sprzedawać

Subject: [Obserwacja o firmie/branży prospekta]

Cześć [Imię],

[1 zdanie — obserwacja o firmie/branży, pokazujące research].

[Produkt] pomaga firmom jak [podobna firma] [mierzalny wynik]
— [social proof: "np. [Klient] zaoszczędził X godzin/tydzień"].

Czy [konkretny ból] to temat u Was?

[Imię nadawcy]

Email 2: Value add (Dzień 3)

Cel: Dać wartość bez sprzedaży

Subject: Re: [subject email 1]

[Imię], szybki follow-up.

Napisałem [artykuł/guide/checklist] o [problem branży].
[Link lub załącznik — PRAWDZIWA wartość, nie reklama].

Myślę że może być przydatny przy [ich sytuacji].

[Imię nadawcy]

Read the full file on GitHub · 208 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 11d ago First seen · 208 lines · 81 tokens per session scan A 1ae7570b8a17

Subscribe to this mod's changes

cold-email is a skill published in the GitHub repository DariuszCiesielski/polish-agent-skills (2 stars, last pushed 4mo ago), licensed MIT. It adds 81 tokens to every session and 2,054 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.