# Mailgun Simple

> Send outbound emails via the Mailgun API. Uses MAILGUN_API_KEY, MAILGUN_DOMAIN, MAILGUN_REGION, and MAILGUN_FROM.

- Skill: `modbender/mailgun-simple` (Agent Skill, multi-file: 3 files)
- Install (CLI): `npx skillmds@latest add modbender/mailgun-simple`
- Raw SKILL.md: https://api.skillmd.com/api/skills/modbender/mailgun-simple/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Integrations & APIs
- Author: modbender (https://skillmd.com/u/modbender)
- Updated: 2026-09-09
- Page: https://skillmd.com/skills/modbender/mailgun-simple

---


# Mailgun Simple

Send outbound emails using the official Mailgun JS SDK.

## Environment Variables

| Variable | Required | Default | Description |
|---|---|---|---|
| `MAILGUN_API_KEY` | **Yes** | — | Your private Mailgun API key. |
| `MAILGUN_DOMAIN` | **Yes** | `aicommander.dev` | Your verified sending domain. |
| `MAILGUN_REGION` | **Yes** | `EU` | API region: `EU` or `US`. |
| `MAILGUN_FROM` | No | `Postmaster <postmaster@{domain}>` | Default sender address. |

## Setup

```bash
npm install mailgun.js@12.7.0 form-data@4.0.1
```

## Tools

### Send Email
```bash
MAILGUN_API_KEY=xxx MAILGUN_DOMAIN=example.com MAILGUN_REGION=EU node scripts/send_email.js <to> <subject> <text> [from]
```