resend-email-sender
v1.0.0Send 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.
Sourced from ClawHub,
Authored by aprilvkuo
Installation
Please help me install the skill `resend-email-sender` from SkillHub official store.
npx skills add aprilvkuo/resend-email-sender
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
[email protected] # Optional, defaults to Resend test domain
Get API key at https://resend.com
2. Send Email
openclaw run resend-email
--to="[email protected]"
--subject="Hello"
--text="Plain text message"
Usage
Basic Text Email
openclaw run resend-email
--to="[email protected]"
--subject="Notification"
--text="Your task is complete."
HTML Email
openclaw run resend-email
--to="[email protected]"
--subject="Welcome"
--html="<h1>Welcome!</h1><p>Thanks for joining.</p>"
Multiple Recipients
openclaw run resend-email
--to="[email protected],[email protected],[email protected]"
--subject="Team Update"
--text="Meeting at 3 PM."
CC and BCC
openclaw run resend-email
--to="[email protected]"
--cc="[email protected]"
--bcc="[email protected]"
--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="[email protected]"
--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 | [email protected] |
Default sender address |
Sender Addresses
- Test domain:
[email protected](default, no setup required) - Custom domain:
[email protected](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