{"slug":"cold-email","name":"Cold Email","version":"1.0.3","updated_at":"2026-10-07T10:48:53.106Z","use_when":"Writes a short, honest first outreach message to a stranger in business, in the recipient's language, with a subject line, one specific reason for writing and one small ask. Use when asked to write a cold email, a first outreach message, a sales or partnership introduction, or a prospecting note, in any language.","not_for":"Bulk or automated mass mailing, follow-up sequences, or inventing personal details about a recipient; it writes one honest first message from the facts you give it.","languages":["any"],"tags":["email","outreach","sales","b2b","writing","prospecting"],"category":"marketing","category_url":"https://aiskills402.com/categories/marketing","keywords":["cold email","first outreach message","partnership introduction","prospecting note"],"faq":[{"q":"What does one email look like?","a":"A subject line, a short body of roughly 60 to 110 words in the recipient's language, one specific reason for writing and a single small ask, with an easy way to say no. It does not stack several requests into one message."},{"q":"What happens when I give it almost no information?","a":"It does not make up a story. On a nearly empty brief, the strong model wrote a role-based reason for the contact and stated openly that it was writing without prior contact. Give it real facts about the recipient and your offer for a sharper message."},{"q":"Is the small model good enough for this?","a":"Read every draft. Claude Haiku passed our mechanical checks but added claims that were not in the brief, such as what most customers say, flattered the recipient and skipped the formal form of address in German, Spanish and Bulgarian. Claude Sonnet did none of that."}],"examples":[{"lang":"en","model":"claude-sonnet-5-5","input_excerpt":"Sender: Mark Dolan, founder of Brightline Bookkeeping (small-business bookkeeping for cafes and bakeries, flat monthly fee). Recipient: Anna Reyes, owner of Corner Loaf Bakery. Real reason: Anna's bakery opened a second location this spring, per its own website. Language: English.","output_excerpt":"Subject: Bookkeeping for two locations\n\nHi Anna,\n\nI saw on Corner Loaf's website that you opened a second location this spring, which is why I'm writing to you. I'm Mark Dolan, founder of Brightline Bookkeeping. We do bookkeeping for cafes and bakeries for a flat monthly fee. We have had no contact before, so this is a cold note.…"},{"lang":"bg","model":"claude-sonnet-5-5","input_excerpt":"Подател: Иван Петров, управител на \"ТехноСервиз\" ЕООД (поддръжка на офис принтери, фиксирана месечна цена). Получател: Мария Георгиева, офис мениджър на счетоводна кантора \"Баланс\". Реална причина: кантората е с два етажа и повече от 20 служители, по данни от сайта ѝ. Език: български.","output_excerpt":"Тема: Поддръжка на принтери за кантората\n\nЗдравейте, Мария Георгиева,\n\nпиша Ви като на офис мениджър на кантора, която според сайта Ви е на два етажа и с над 20 служители. Пиша Ви без предишен контакт.\n\nКазвам се Иван Петров и съм управител на \"ТехноСервиз\" ЕООД. Поддържаме офис принтери срещу фиксирана месечна цена.\n\nЩе Ви бъде ли полезно да Ви опиша в три реда как работи?…"},{"lang":"de","model":"claude-sonnet-5-5","input_excerpt":"Absender: Lena Vogt, Inhaberin von Vogt Steuerdigital (Software zur Belegerfassung für Handwerksbetriebe). Empfänger: Herr Thomas Kraus, Geschäftsführer der Kraus Elektrotechnik GmbH. Echter Anlass: Die Firma sucht laut Website einen Bürokaufmann. Sprache: Deutsch.","output_excerpt":"Betreff: Belegerfassung für Ihr Büro\n\nSehr geehrter Herr Kraus,\n\nauf Ihrer Website habe ich gelesen, dass die Kraus Elektrotechnik GmbH einen Bürokaufmann sucht. Deshalb schreibe ich Ihnen, ohne dass wir uns kennen. Ich bin Lena Vogt, Inhaberin von Vogt Steuerdigital, und wir bieten Software zur Belegerfassung für Handwerksbetriebe an.…"},{"lang":"es","model":"claude-sonnet-5-5","input_excerpt":"Remitente: Carlos Ibáñez, fundador de Ruta Verde Logística (reparto de última milla en bicicleta eléctrica). Destinatario: la señora Laura Méndez, directora de una tienda online de cosmética natural, Flor de Sal. Motivo real: Flor de Sal anuncia envío en 24 horas en su web. Idioma: español.","output_excerpt":"Asunto: Sobre su envío en 24 horas\n\nEstimada señora Méndez:\n\nLe escribo porque en la web de Flor de Sal anuncian envío en 24 horas, un plazo que depende mucho del reparto de última milla.\n\nSoy Carlos Ibáñez, fundador de Ruta Verde Logística, un servicio de reparto de última milla en bicicleta eléctrica. Le escribo sin contacto previo.…"},{"lang":"ru","model":"claude-sonnet-5-5","input_excerpt":"Отправитель: Сергей Волков, основатель студии Северный Двор (фотосъёмка товаров для интернет-магазинов, пакет на 50 фото). Получатель: Ольга Николаева, руководитель интернет-магазина детской одежды Мелкий. Реальный повод: в магазине на сайте у большинства товаров одна фотография. Язык: русский.","output_excerpt":"Тема: Фотографии товаров на сайте\n\nЗдравствуйте, Ольга.\n\nМы не знакомы, и пишу я потому, что на сайте магазина «Мелкий» у большинства товаров только одна фотография.\n\nМеня зовут Сергей Волков, я основатель студии «Северный Двор»: мы снимаем товары для интернет-магазинов. Есть пакет на 50 фото.\n\nБудет ли Вам полезно, если я в трёх строках опишу, как он устроен?…"}],"page_url":"https://aiskills402.com/skills/cold-email","markdown_url":"https://aiskills402.com/skills/cold-email.md","image_url":"https://cdn.aiskills402.com/og/skills/cold-email/2a911b2d.png","related_url":"https://api.aiskills402.com/v1/skills/cold-email/related","purchases_count":58,"tested":{"date":"2026-09-30","strong":{"model":"claude-sonnet-5-5 (Claude Code alias \"sonnet\")","verdict":"6 of 6 cases pass (en, bg, de, es, ru, thin brief). Right language, formal address, 60-110 words, one ask, easy exit, and no invented facts: with almost no brief it wrote a role-based reason and said it was writing without prior contact."},"weak":{"model":"claude-haiku-4-5-20251001 (Claude Code alias \"haiku\")","verdict":"6 of 6 pass the mechanical checks, but reading the texts shows real flaws: invents claims not in the brief (\"most bakery owners I work with\", \"no massive minimums\", \"no surprise bills\"), flatters (\"great milestone\"), ignores the formal-address rule in de/es/bg greetings (Hallo, Hola Laura, first-name only), leaves the Russian email without a greeting and with an English \"Subject:\" label, and on the thin brief does not say it is a first contact. Review its drafts before use."},"note":"One run per model and case (run 2 of 2; run 1 failed only because of a mistaken length check in our own cases, fixed). Checks are mechanical (language, kept names, banned phrases, a subject line, at most 139 words); they cannot detect invented claims, which we read by hand.","baseline":{"date":"2026-10-03","rows":[{"label":"Cases passed","better":"higher","strong":{"with":{"n":6,"of":6},"without":{"n":0,"of":6}},"weak":{"with":{"n":6,"of":6},"without":{"n":1,"of":6}}}],"note":"One run per model and case. Mostly length: 57 to 102 words with the skill, 137 to 297 without it. Sonnet's content was as good without the skill; Haiku without it used one stock phrase and once addressed a Bulgarian reader informally."},"report_url":null},"price_usd":"0.03","price_micro":30000,"size_bytes":6193,"sha256":"58b9ef69bd3619b0c3c5ce4679edce79e1be1e573eac872a43a6811b02375f00","outline":["Hard rules","Shape of the message","Subject line","Words to avoid","Format","When the brief is thin","Check before you answer"],"license":{"summary":"Perpetual, non-exclusive; use and modify for yourself incl. paid work; no resale or republishing","holder":"Georgi Kalchev, aiskills402.com","url":"https://aiskills402.com/docs#license"},"buy_url":"https://api.aiskills402.com/v1/skills/cold-email/file","redownload_url_template":"https://api.aiskills402.com/v1/purchases/{token}","mcp_tool":null,"payment":{"protocol":"x402","scheme":"exact","asset":"USDC","selling":true,"network":"base","network_caip2":"eip155:8453","pay_to":"0xbc0dcc70d8b5d85541d86ffc68d988fd59c22e68","facilitator":"cdp"},"seo_title":"Cold Email Skill for AI Agents (SKILL.md)","seo_description":"This skill writes a short, honest first outreach message in the recipient's language, with a subject line and one small ask. $0.03, yours forever.","versions":[{"version":"1.0.3","date":"2026-10-07","changelog":"# Changelog\n\n## 1.0.3 — 2026-10-07\n\n- Test summary: the length range with the skill was misstated as 76 to 102 words; counted again, it is 57 to 102 (the shortest is Haiku's Russian email). The skill file itself is unchanged.\n\n## 1.0.2 — 2026-10-04\n\n- Test summary: the same cases with and without the skill, per model, now shown next to the verdicts, including where the skill made no difference. The skill file itself is unchanged.\n\n## 1.0.1 — 2026-10-03\n\n- Licence section: the note telling the agent to skip it now reads \"ignore it while you work\" instead of \"ignore it while rewriting text\", which was written for one skill and read oddly in the others. The skill's own instructions are unchanged.\n\n## 1.0.0 — 2026-09-30\n\nFirst release: a short, honest first outreach message with subject line, in the recipient's language.\n"},{"version":"1.0.2","date":"2026-10-04","changelog":"# Changelog\n\n## 1.0.2 — 2026-10-04\n\n- Test summary: the same cases with and without the skill, per model, now shown next to the verdicts, including where the skill made no difference. The skill file itself is unchanged.\n\n## 1.0.1 — 2026-10-03\n\n- Licence section: the note telling the agent to skip it now reads \"ignore it while you work\" instead of \"ignore it while rewriting text\", which was written for one skill and read oddly in the others. The skill's own instructions are unchanged.\n\n## 1.0.0 — 2026-09-30\n\nFirst release: a short, honest first outreach message with subject line, in the recipient's language.\n"},{"version":"1.0.1","date":"2026-10-03","changelog":"# Changelog\n\n## 1.0.1 — 2026-10-03\n\n- Licence section: the note telling the agent to skip it now reads \"ignore it while you work\" instead of \"ignore it while rewriting text\", which was written for one skill and read oddly in the others. The skill's own instructions are unchanged.\n\n## 1.0.0 — 2026-09-30\n\nFirst release: a short, honest first outreach message with subject line, in the recipient's language.\n"},{"version":"1.0.0","date":"2026-09-30","changelog":"# Changelog\n\n## 1.0.0 — 2026-09-30\n\nFirst release: a short, honest first outreach message with subject line, in the recipient's language.\n"}]}