Send emails via SMTP or Resend API with support for plain text, HTML, and attachments. Use when the user asks to send an email, email someone, or compose and send a message. Supports single recipients and can include file attachments. Works with Gmail, Outlook, Yahoo, QQ Mail, 163 Mail, Resend, and any SMTP server.
Scanned 9/10/2026
Install to Claude Code
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---
name: smtp-send
description: Send emails via SMTP or Resend API with support for plain text, HTML, and attachments. Use when the user asks to send an email, email someone, or compose and send a message. Supports single recipients and can include file attachments. Works with Gmail, Outlook, Yahoo, QQ Mail, 163 Mail, Resend, and any SMTP server.
---
# Email Send
发送邮件,支持 SMTP 和 Resend API 两种方式。
## 🚀 快速使用
```bash
# 发送简单邮件
python3 scripts/send_email.py \
--to recipient@example.com \
--subject "Meeting Tomorrow" \
--body "Hi, let's meet at 2pm tomorrow."
# 发送 HTML 邮件
python3 scripts/send_email.py \
--to recipient@example.com \
--subject "Weekly Report" \
--body "<h1>Report</h1><p>Here are the updates...</p>" \
--html
# 发送带附件的邮件
python3 scripts/send_email.py \
--to recipient@example.com \
--subject "Documents" \
--body "Please find the attached files." \
--attachments report.pdf,data.csv
# 指定使用 Resend
python3 scripts/send_email.py \
--to recipient@example.com \
--subject "Test" \
--body "Hello" \
--provider resend
```
## ⚙️ 配置
在 `~/.smtp_config` 中配置(二选一或两个都配):
### 方式 1: Resend API(推荐,更简单)
```json
{
"resend_api_key": "re_xxxxx",
"resend_from": "you@your-domain.com"
}
```
获取 API key: https://resend.com
**注意**:免费账户只能发给注册邮箱,要发给其他人需要验证域名。
### 方式 2: SMTP(163/QQ/Gmail 等)
```json
{
"host": "smtp.163.com",
"port": 465,
"user": "your-email@163.com",
"password": "your-auth-code",
"from": "your-email@163.com",
"use_ssl": true
}
```
### 两个都配(自动 fallback)
```json
{
"resend_api_key": "re_xxxxx",
"resend_from": "you@your-domain.com",
"host": "smtp.163.com",
"port": 465,
"user": "your-email@163.com",
"password": "your-auth-code",
"from": "your-email@163.com",
"use_ssl": true
}
```
配置完后设置权限:
```bash
chmod 600 ~/.smtp_config
```
## 📋 参数
| 参数 | 必填 | 说明 |
|------|------|------|
| `--to` | ✅ | 收件人邮箱 |
| `--subject` | ✅ | 邮件标题 |
| `--body` | ✅ | 邮件内容 |
| `--html` | ❌ | 以 HTML 格式发送 |
| `--attachments` | ❌ | 附件路径,多个用逗号分隔 |
| `--provider` | ❌ | `auto`/`smtp`/`resend`(默认 auto) |
## 🔄 Provider 选择逻辑
- `auto`(默认):优先 Resend,失败则 fallback 到 SMTP
- `smtp`:强制使用 SMTP
- `resend`:强制使用 Resend API
## 📧 常见 SMTP 配置
| 邮箱 | Host | Port | SSL |
|------|------|------|-----|
| 163 | smtp.163.com | 465 | true |
| QQ | smtp.qq.com | 465 | true |
| Gmail | smtp.gmail.com | 587 | false |
| Outlook | smtp.office365.com | 587 | false |
**注意**:163/QQ/Gmail 都需要使用授权码而非登录密码。
## 🔐 安全
- 凭据存储在 `~/.smtp_config`,权限应设为 600
- API key 和密码不会出现在命令行参数中
- 配置文件不应提交到版本控制
## 🐛 常见问题
**认证失败**:检查授权码是否正确,是否开启了 SMTP 服务
**Resend 403**:免费账户只能发给注册邮箱,需要验证域名才能发给其他人
**连接超时**:检查网络,或者端口是否被防火墙拦截
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