Resend Email Sender

该 Skill 封装 Resend 邮件发送服务，无需自建 SMTP。通过命令行参数指定收件人、主题及文本或 HTML 正文，支持多收件人、CC/BCC 群发，适合通知、告警和自动化邮件流程。需配置 RESEND_API_KEY，发件地址默认使用 Resend 测试域名，自定义域名需先在 Resend 侧验证；不支持附件。

aprilvkuo

热度 73.86

最近更新 2026-05-11 17:28:19

分类：协作依赖：代码执行 / 第三方 API应用场景：邮件起草 / 工作流 / 自动化脚本

安装技能

复制下面的话术发给你的 Agent，它会通过 secure-skills 检索并安装该技能。

执行命令安装此 skill： npx secure-skills-cli add resend-email-sender

Metadata

name: resend-email
description: Send emails using Resend API. Use when the user needs to send emails without configuring SMTP servers. Supports text and HTML emails, multiple recipients, CC/BCC, and bulk sending. Ideal for notifications, alerts, newsletters, and automated email workflows.

Resend Email Sender

Send emails via Resend API - no SMTP configuration needed.

Quick Start

1. Configure

Set environment variables in .env:

RESEND_API_KEY=your_resend_api_key
RESEND_FROM=onboarding@resend.dev  # Optional, defaults to Resend test domain

Get API key at https://resend.com

2. Send Email

openclaw run resend-email \
  --to="recipient@example.com" \
  --subject="Hello" \
  --text="Plain text message"

Usage

Basic Text Email

openclaw run resend-email \
  --to="user@example.com" \
  --subject="Notification" \
  --text="Your task is complete."

HTML Email

openclaw run resend-email \
  --to="user@example.com" \
  --subject="Welcome" \
  --html="<h1>Welcome!</h1><p>Thanks for joining.</p>"

Multiple Recipients

openclaw run resend-email \
  --to="user1@example.com,user2@example.com,user3@example.com" \
  --subject="Team Update" \
  --text="Meeting at 3 PM."

CC and BCC

openclaw run resend-email \
  --to="primary@example.com" \
  --cc="manager@example.com" \
  --bcc="archive@example.com" \
  --subject="Report" \
  --text="Please find the attached report."

From Agent

When agent needs to send email:

# Use exec to call the skill
exec openclaw run resend-email \
  --to="recipient@example.com" \
  --subject="Automated Notification" \
  --text="This email was sent automatically by the agent."

Configuration Options

Variable	Required	Default	Description
`RESEND_API_KEY`	Yes	-	Your Resend API key
`RESEND_FROM`	No	`onboarding@resend.dev`	Default sender address

Sender Addresses

Test domain: onboarding@resend.dev (default, no setup required)
Custom domain: noreply@yourdomain.com (requires domain verification in Resend dashboard)

Limitations

Attachments not supported (Resend API requires base64 encoding)
Rate limits apply based on Resend plan
Email size limits per Resend documentation

Troubleshooting

"RESEND_API_KEY not configured"

Set RESEND_API_KEY in .env file or environment

"Failed to send email: Unauthorized"

Check API key is correct and active
Verify API key has email sending permission

"Failed to send email: Bad Request"

Check recipient email format is valid
Verify from address is verified (for custom domains)

Resources

scripts/send_email.py - Main email sending script