Agent skill

Email

by hashgraph-online in hashgraph-online/awesome-codex-plugins

A skill your agent uses when a val sends email, receives email, or is triggered by an incoming email.

Apache-2.0Auto-check passed

Install Email

skills CLI

$ npx skills add hashgraph-online/awesome-codex-plugins --skill email -a claude-code

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

GitHub CLI

$ gh skill install hashgraph-online/awesome-codex-plugins email --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/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/val-town/plugins/skills/email .claude/skills/email && 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/

Paste into Claude Code

Install the "email" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/val-town/plugins/skills/email into .claude/skills/email/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "email", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/val-town/plugins/skills/email

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add hashgraph-online/awesome-codex-plugins --skill email -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install hashgraph-online/awesome-codex-plugins email --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .agents/skills && cp -r skills-src/plugins/val-town/plugins/skills/email .agents/skills/email && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "email" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/val-town/plugins/skills/email into .agents/skills/email/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "email", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add hashgraph-online/awesome-codex-plugins --skill email -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install hashgraph-online/awesome-codex-plugins email --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/plugins/val-town/plugins/skills/email .cursor/skills/email && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "email" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/val-town/plugins/skills/email into .cursor/skills/email/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "email", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/hashgraph-online/awesome-codex-plugins.git --path plugins/val-town/plugins/skills/email

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add hashgraph-online/awesome-codex-plugins --skill email -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install hashgraph-online/awesome-codex-plugins email --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/plugins/val-town/plugins/skills/email .gemini/skills/email && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "email" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/val-town/plugins/skills/email into .gemini/skills/email/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "email", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install hashgraph-online/awesome-codex-plugins email

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add hashgraph-online/awesome-codex-plugins --skill email -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .github/skills && cp -r skills-src/plugins/val-town/plugins/skills/email .github/skills/email && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "email" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/val-town/plugins/skills/email into .github/skills/email/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "email", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add hashgraph-online/awesome-codex-plugins --skill email -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install hashgraph-online/awesome-codex-plugins email --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/plugins/val-town/plugins/skills/email .opencode/skills/email && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "email" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/val-town/plugins/skills/email into .opencode/skills/email/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "email", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: email
GitHub stars: 1.2k
Token cost: ~653 tokens
SKILL.md length: 231 words
Files: 1
Skills in repo: 686
Repo updated: Oct 8, 2026
First seen: Oct 7, 2026
Licence: Apache-2.0

At a glance

A skill your agent uses when a val sends email, receives email, or is triggered by an incoming email.

A val sends email
SKILL.md covers Receiving email — email-type…, Sending email — std/email, Replying to an incoming message and Verifying changes
Reaches esm.town and docs.val.town
Is triggered by an incoming email

What it does

Email is an agent skill from hashgraph-online/awesome-codex-plugins. Use when a val sends email, receives email, or is triggered by an incoming email. Covers email-type vals (the Email handler shape, attachment limits, the assigned val email address) and sending mail via std/email.

Its SKILL.md is about 650 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: A curated list of awesome OpenAI Codex / ChatGPT plugins, skills, and resources. The 1 Codex Marketplace. See live plugins at: https://hol.org/plugins/best-codex-plugins. The licence is Apache-2.0.

When your agent uses it

A val sends email
Is triggered by an incoming email

Example prompts

“/email”

What it can do on your machine

Read from SKILL.md and the folder at commit 78497e5. 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 (its code samples are typescript).
From the folder's file list and the shell code blocks in SKILL.md.
Network
Hosts in commands or code, which the agent is likely to contact:
- esm.town
- docs.val.town
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 loads about 653 tokens when it runs. Until then it costs about 55 tokens; SKILL.md has 231 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~55
When it runs · the whole SKILL.md, loaded when a task matches: ~653

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

The full file from hashgraph-online/awesome-codex-plugins at commit 78497e5, republished under its Apache-2.0 licence (© hashgraph-online). 231 words, ~653 tokens.

Download SKILL.mdSave it as .claude/skills/email/SKILL.md (or your agent's skills folder).

name: email
description: Use when a val sends email, receives email, or is triggered by an incoming email. Covers email-type vals (the Email handler shape, attachment limits, the assigned val email address) and sending mail via std/email.
triggers: email, mail, inbox, send, sending, smtp, imap, attachment, message, notification

Email

Val Town supports both directions: vals can be triggered by incoming mail (email-type vals) and can send mail via std/email.

Receiving email — email-type vals

Email vals (fileType: "email") run when a message is delivered to the val's assigned address.

// Learn more: https://docs.val.town/vals/email/
// Email type: {
//   from: string,
//   to: string[],
//   subject?: string,
//   text?: string,
//   html?: string,
//   attachments: File[],
//   headers: Record<string, string>
// }
export default async function (e: Email) {
  console.log(e.from, e.subject, e.text);
}

The file must have an export — export default for the handler.

Maximum 30MB per message, including attachments. Larger messages will be rejected.

Reading the assigned address

When you list files or create an email-type file, the response includes links.email — the address that triggers this val. Always read this from the API response. Never construct an email address yourself — the format is owned by the platform and may change.

Sending email — `std/email`

For outgoing mail, import from std/email:

import { email } from "https://esm.town/v/std/email";

await email({
  to: "user@example.com",
  subject: "Hello",
  text: "Message body",
});

std/email exports email as the send function itself — call it directly (email({ ... })); there is no email.send method. It accepts the shape you'd expect: to, subject, text, html, plus from, cc, bcc, replyTo, attachments, and headers. If no to field is specified, it defaults to sending mail to the val owner's address.

Replying to an incoming message

Combine the two — read the inbound from in an email-type handler, then call email to reply:

import { email } from "https://esm.town/v/std/email";

export default async function (e: Email) {
  await email({
    to: e.from,
    subject: `Re: ${e.subject ?? ""}`,
    text: "Got it, thanks!",
  });
}

Verifying changes

After editing an email-type val, use run_file with a sample Email payload to invoke the handler manually instead of waiting for a real incoming message. For send-only vals, run the script the same way and check get_logs for delivery errors.

Files

Just SKILL.md in plugins/val-town/plugins/skills/email of hashgraph-online/awesome-codex-plugins.

Open the folder on GitHubat commit 78497e5

Compare with similar skills

Email 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 compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Email this skillhashgraph-online/awesome-codex-plugins	1.2k	—	~653	Automated safety check: Pass	Apache-2.0	today
Mailtrap Sending Emailssickn33/agentic-awesome-skills	47k	1 repos	~2.8k	Automated safety check: Pass	MIT	yesterday
Emailasgeirtj/system_prompts_leaks	69k	—	~3.5k	Automated safety check: Pass	CC0-1.0	yesterday
Emailscoreyhaines31/marketingskills	54k	1 repos	~2.6k	Automated safety check: Pass	MIT	yesterday
Mailtrap Email Integrationaffaan-m/ECC	275k	1 repos	~955	Automated safety check: Pass	MIT	3 days ago
Email Marketing Biblesickn33/agentic-awesome-skills	47k	—	~8.7k	Automated safety check: Pass	MIT	yesterday

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Questions about Email

What does Email do?

A skill your agent uses when a val sends email, receives email, or is triggered by an incoming email. Email is an agent skill from hashgraph-online/awesome-codex-plugins. Use when a val sends email, receives email, or is triggered by an incoming email.

When should I use Email?

Email fits situations like: A val sends email; is triggered by an incoming email.

How do I install Email in Claude Code?

Run `npx skills add hashgraph-online/awesome-codex-plugins --skill email -a claude-code`. Or copy the skill folder (plugins/val-town/plugins/skills/email in hashgraph-online/awesome-codex-plugins) into .claude/skills/email in your project. Claude Code loads it when a task matches its description.

How do I install Email in Codex?

Run `npx skills add hashgraph-online/awesome-codex-plugins --skill email -a codex`. Or copy the skill folder (plugins/val-town/plugins/skills/email in hashgraph-online/awesome-codex-plugins) into .agents/skills/email in your project. Codex loads it when a task matches its description.

Can I use Email 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 hashgraph-online/awesome-codex-plugins --skill email -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, .gemini/skills/email, .github/skills/email and .opencode/skills/email in your project.

What does Email need to run?

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

Does Email access the network?

SKILL.md names 2 domains. In commands or code: esm.town and docs.val.town; the agent is likely to contact these when it follows the instructions. This is read from the text; nothing was executed.

Is Email 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 use?

Email is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Email use?

About 653 tokens (SKILL.md is roughly 2.6k 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?

Skills that share tags, products or a category with Email: Mailtrap Sending Emails (sickn33/agentic-awesome-skills, 47k stars), Email (asgeirtj/system_prompts_leaks, 69k stars), Emails (coreyhaines31/marketingskills, 54k stars) and Mailtrap Email Integration (affaan-m/ECC, 275k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Email?

hashgraph-online (a GitHub organization) maintains it in hashgraph-online/awesome-codex-plugins, which has 1,242 GitHub stars. The repository holds 686 skills in this directory. The repository was last updated on October 8, 2026.

Source: hashgraph-online/awesome-codex-plugins on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install Email

Facts

At a glance

What it does

When your agent uses it

Example prompts

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Email

Receiving email — email-type vals

Reading the assigned address

Sending email — std/email

Replying to an incoming message

Verifying changes

Files

Compare with similar skills

Similar skills

More from hashgraph-online/awesome-codex-plugins

Questions about Email

Sending email — `std/email`