Agent skill

Email Writer

by holaboss-ai in holaboss-ai/holaOS

Draft clear, well-structured emails — replies, outreach, and follow-ups — in the right tone.

Custom licenceAuto-check passed

Install Email Writer

skills CLI
$ npx skills add holaboss-ai/holaOS --skill email-writer -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install holaboss-ai/holaOS email-writer --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/holaboss-ai/holaOS.git skills-src && mkdir -p .claude/skills && cp -r skills-src/apps/desktop/electron/default-skills/email-writer .claude/skills/email-writer && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
email-writer
GitHub stars
11k
Token cost
~477 tokens
SKILL.md length
296 words
Files
1
Skills in repo
30
Repo updated
First seen
Licence
Custom licence

At a glance

Draft clear, well-structured emails — replies, outreach, and follow-ups — in the right tone.

  • Works in 4 steps: Establish the goal (what response do you… → Draft a subject line that states the… → Open with the ask or headline, add only… → …
  • SKILL.md covers When to use this skill, Principles, How to work and Output format
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Email Writer is an agent skill from holaboss-ai/holaOS. Draft clear, well-structured emails — replies, outreach, and follow-ups — in the right tone.

Its SKILL.md is about 480 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

The repository describes itself as: Open-source agentic workspace enterprises can make their own. Connect the systems you already run — 100+ integrations, MCP, chat tools, apps, browser, local files — with shared…

Example prompts

  • “/email-writer”

Workflow steps

4 steps, taken from the first numbered list in SKILL.md.

  1. Establish the goal (what response do you want?), the recipient, and the relationship/tone.
  2. Draft a subject line that states the point, not a vague topic.
  3. Open with the ask or headline, add only the context that earns the yes, and close with a concrete next step.
  4. Trim: remove hedges, filler, and anything the reader doesn't need to act.

What it can do on your machine

Read from SKILL.md and the folder at commit 4684714. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Email Writer loads about 477 tokens when it runs. Until then it costs about 26 tokens; SKILL.md has 296 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~26
When it runs · the whole SKILL.md, loaded when a task matches
~477

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 296 words (~477 tokens).

“Write the email the reader can answer in one pass. Most email fails not on grammar but on clarity of ask: the recipient can't tell what you want, by when, or why it matters to them. Fix that first; everything…”

— opening of SKILL.md by holaboss-ai, Custom licence
name
email-writer

Read the full SKILL.md on GitHub

Files

Just SKILL.md in apps/desktop/electron/default-skills/email-writer of holaboss-ai/holaOS.

Open the folder on GitHubat commit 4684714

Compare with similar skills

Email Writer next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Email Writer compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Email Writer this skillholaboss-ai/holaOS11k—~477Automated safety check: PassCustom licence
Email WriterRightNow-AI/openfang18k—~897Automated safety check: PassApache-2.0
Emailscoreyhaines31/marketingskills54k1 repos~2.8kAutomated safety check: PassMIT
Emailasgeirtj/system_prompts_leaks69k—~3.5kAutomated safety check: PassCC0-1.0
Investor Outreachaffaan-m/ECC277k6 repos~664Automated safety check: PassMIT
Email ManagerLeoYeAI/openclaw-master-skills2.2k—~5.5kAutomated safety check: PassMIT

Similar skills

  • Email Writer

    RightNow-AI/openfang

    Professional email writing expert for tone, structure, clarity, and business communication

    18k GitHub stars~897 tokensUpdated 3 mo ago
    Writing & ContentAuto-check passed
  • Emails

    coreyhaines31/marketingskills

    When the user wants to create or optimize an email sequence, drip campaign, automated email flow, or lifecycle email program.

    54k GitHub starsUsed in 1 repo~2.8k tokens
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  • Email

    asgeirtj/system_prompts_leaks

    Read or triage email, clean up an inbox, draft or send messages, and check delivery.

    69k GitHub stars~3.5k tokensUpdated yesterday
    Productivity & AutomationAuto-check passed
  • Investor Outreach

    affaan-m/ECC

    Draft cold emails, warm intro blurbs, follow-ups, update emails, and investor communications for fundraising.

    277k GitHub starsUsed in 6 repos~664 tokens
    Business, Finance & HRAuto-check passed
  • Email Manager

    LeoYeAI/openclaw-master-skills

    When user asks to write email, draft reply, manage inbox, email template, follow up email, cold email, professional email, email subject line, thank you email, apology email, meeting request email…

    2.2k GitHub stars~5.5k tokensUpdated 2 mo ago
    Writing & ContentAuto-check passed
  • Cold Email

    coreyhaines31/marketingskills

    Write and run B2B cold outbound that gets replies, from cold emails and follow-ups to sending setup, LinkedIn, multichannel cadences, and reply handling.

    54k GitHub stars~3.1k tokensUpdated 2 days ago
    Sales & SupportAuto-check passed

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Questions about Email Writer

What does Email Writer do?

Draft clear, well-structured emails — replies, outreach, and follow-ups — in the right tone. Email Writer is an agent skill from holaboss-ai/holaOS. Draft clear, well-structured emails — replies, outreach, and follow-ups — in the right tone.

How do I install Email Writer in Claude Code?

Run `npx skills add holaboss-ai/holaOS --skill email-writer -a claude-code`. Or copy the skill folder (apps/desktop/electron/default-skills/email-writer in holaboss-ai/holaOS) into .claude/skills/email-writer in your project. Claude Code loads it when a task matches its description.

How do I install Email Writer in Codex?

Run `npx skills add holaboss-ai/holaOS --skill email-writer -a codex`. Or copy the skill folder (apps/desktop/electron/default-skills/email-writer in holaboss-ai/holaOS) into .agents/skills/email-writer in your project. Codex loads it when a task matches its description.

Can I use Email Writer in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add holaboss-ai/holaOS --skill email-writer -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/email-writer, .gemini/skills/email-writer, .github/skills/email-writer and .opencode/skills/email-writer in your project.

What does Email Writer need to run?

SKILL.md names no scripts, command-line tools or credentials: Email Writer is instructions for the agent only.

Does Email Writer access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Email Writer safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Email Writer use?

Email Writer has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.

How many tokens does Email Writer use?

About 477 tokens (SKILL.md is roughly 1.9k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Email Writer?

Skills that share tags, products or a category with Email Writer: Email Writer (RightNow-AI/openfang, 18k stars), Emails (coreyhaines31/marketingskills, 54k stars), Email (asgeirtj/system_prompts_leaks, 69k stars) and Investor Outreach (affaan-m/ECC, 277k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Email Writer?

holaboss-ai (a GitHub organization) maintains it in holaboss-ai/holaOS, which has 11,448 GitHub stars. The repository holds 30 skills in this directory. The repository was last updated on August 21, 2026.

Source: holaboss-ai/holaOS on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.