How do I install the Send Email skill?

Run npx skillmds@latest add weizhengzhou/send-email in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

What does the Send Email skill do?

Skill: send-email It is listed under Productivity on SkillMD.

Is Send Email safe to use?

This skill has not completed SkillMD's automated safety review yet. Capability flags: makes network calls, reads secrets. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Send Email?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Send Email free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Send Email?

WeizhengZhou (@weizhengzhou) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Send Email by weizhengzhou — Agent Skill

Name: Send Email
Rating: 4.666666666666667 (3 reviews)
Author: WeizhengZhou

File contents

Skill: send-email

Send an email from an AgentMail inbox.

Usage

/send-email --to <recipient> --from <inbox_email> --subject "<subject>" --body "<body>"

Arguments

Argument	Required	Default	Description
`--to`	yes	—	Recipient email address
`--from`	yes	—	AgentMail inbox email (e.g. `your-agent@agentmail.to`)
`--subject`	yes	—	Email subject line
`--body`	yes	—	Plain-text email body
`--html`	no	—	HTML email body (overrides `--body` for HTML clients)
`--cc`	no	—	CC recipients (comma-separated)
`--reply-to`	no	—	Reply-to address

How it works

Look up AGENTMAIL_API_KEY — check in order:
- Environment variable AGENTMAIL_API_KEY
- /path/to/your/project/.env
- macOS Keychain: security find-generic-password -s agentmail -w
URL-encode the --from address for use as {inbox_id} in the path.
POST to the AgentMail API:

INBOX_ID=$(python3 -c "import urllib.parse; print(urllib.parse.quote('$FROM_EMAIL'))")
curl -s -X POST "https://api.agentmail.to/v0/inboxes/${INBOX_ID}/messages/send" \
  -H "Authorization: Bearer $AGENTMAIL_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "to": ["$TO"],
    "subject": "$SUBJECT",
    "text": "$BODY"
  }'

On success, the API returns {"message_id": "...", "thread_id": "..."}. Report both to the user.
On error, report the name and message fields from the response.

Available inboxes

Email	Display Name	Use for
`your-agent@agentmail.to`	Parenting Assistant	Status updates, project comms
`your-inbox@agentmail.to`	KidPlanr	Marketing, lead outreach

API reference

List inboxes: GET https://api.agentmail.to/v0/inboxes
Send message: POST https://api.agentmail.to/v0/inboxes/{inbox_id}/messages/send
List messages: GET https://api.agentmail.to/v0/inboxes/{inbox_id}/messages

Notes

inbox_id in the URL must be the full email address, URL-encoded (%40 for @)
The API key from kid_camp2/backend/.env works for both inboxes (same organization)
Never log or expose the API key in output

---name: send-emaildescription: Skill: send-email---# Skill: send-emailSend an email from an AgentMail inbox.## Usage```/send-email --to <recipient> --from <inbox_email> --subject "<subject>" --body "<body>"```## Arguments| Argument | Required | Default | Description ||----------|----------|---------|-------------|| `--to` | yes | — | Recipient email address || `--from` | yes | — | AgentMail inbox email (e.g. `your-agent@agentmail.to`) || `--subject` | yes | — | Email subject line || `--body` | yes | — | Plain-text email body || `--html` | no | — | HTML email body (overrides `--body` for HTML clients) || `--cc` | no | — | CC recipients (comma-separated) || `--reply-to` | no | — | Reply-to address |## How it works1. Look up `AGENTMAIL_API_KEY` — check in order: - Environment variable `AGENTMAIL_API_KEY` - `/path/to/your/project/.env` - macOS Keychain: `security find-generic-password -s agentmail -w`2. URL-encode the `--from` address for use as `{inbox_id}` in the path.3. POST to the AgentMail API:```bashINBOX_ID=$(python3 -c "import urllib.parse; print(urllib.parse.quote('$FROM_EMAIL'))")curl -s -X POST "https://api.agentmail.to/v0/inboxes/${INBOX_ID}/messages/send" \ -H "Authorization: Bearer $AGENTMAIL_API_KEY" \ -H "Content-Type: application/json" \ -d '{ "to": ["$TO"], "subject": "$SUBJECT", "text": "$BODY" }'```4. On success, the API returns `{"message_id": "...", "thread_id": "..."}`. Report both to the user.5. On error, report the `name` and `message` fields from the response.## Available inboxes| Email | Display Name | Use for ||-------|-------------|---------|| `your-agent@agentmail.to` | Parenting Assistant | Status updates, project comms || `your-inbox@agentmail.to` | KidPlanr | Marketing, lead outreach |## API reference- List inboxes: `GET https://api.agentmail.to/v0/inboxes`- Send message: `POST https://api.agentmail.to/v0/inboxes/{inbox_id}/messages/send`- List messages: `GET https://api.agentmail.to/v0/inboxes/{inbox_id}/messages`## Notes- `inbox_id` in the URL must be the full email address, URL-encoded (`%40` for `@`)- The API key from `kid_camp2/backend/.env` works for both inboxes (same organization)- Never log or expose the API key in output

Frequently asked questions

Send Email