A robust SMTP automation skill for sending Markdown-formatted emails with attachments and retry logic.
Install & Download
1. ClawHub CLI
The fastest way to install a skill directly from the registry.
npx clawhub@latest install smtp-sender
2. Manual Installation
Copy the skill folder to one of these locations
~/.openclaw/skills/ <project>/skills/ Priority: Workspace > Local > Bundled
3. Prompt Installation
Copy this prompt to OpenClaw to install it automatically.
Help me install smtp-sender using Clawhub. If Clawhub is not installed, install it first (npm i -g clawhub).
Prefer to download?
Get the raw skill files in a ZIP archive.
What is SMTP Sender?
The SMTP Sender is a specialized component within the Openclaw Skills ecosystem designed to bridge the gap between automated agent workflows and traditional email communication. It allows users to send rich-text emails, including HTML and Markdown support, while ensuring reliability through built-in retry mechanisms.
By leveraging a centralized configuration file, this skill enables seamless integration of email notifications and report delivery into any AI-driven process. It is built to be lightweight yet resilient, making it a foundational tool for developers who need to automate outbound communications via Openclaw Skills.
SMTP Sender Use Cases
- Sending automated status reports after task completion within Openclaw Skills.
- Notifying team members of critical system alerts or project updates automatically.
- Distributing PDF reports or logs as attachments directly from an AI agent workflow.
- Standardizing outbound communication using Markdown-to-HTML conversion for professional formatting.
How SMTP Sender Works
- The skill reads the SMTP server credentials and configuration from a secured JSON file located in the skill directory.
- It processes the input body content, optionally converting Markdown syntax into formatted HTML for the email body.
- The script identifies and attaches any specified local files to the email draft.
- It initiates a secure connection and attempts to transmit the email via the configured SMTP server.
- If a networking or temporary error occurs, it implements a 3-try retry logic, logging every attempt for auditing purposes.
SMTP Sender Setup
First, create a configuration file at ~/.openclaw/workspace/skills/smtp-sender/smtp-config.json with your provider details:
{
"server": "smtp.example.com",
"port": 465,
"username": "[email protected]",
"password": "your-password",
"emailFrom": "[email protected]",
"useTLS": true
}
Ensure file permissions are secured using chmod 600 smtp-config.json. This configuration is a prerequisite for the script to function correctly within the Openclaw Skills environment.
SMTP Sender Data Schema & Taxonomy
The skill manages data through a combination of configuration files and CLI arguments:
| Component | Type | Description |
|---|---|---|
smtp-config.json |
JSON | Stores server host, port, credentials, and TLS settings. |
--to |
Argument | The recipient's email address. |
--subject |
Argument | The email subject line. |
--body |
Argument | The content (supports Markdown). |
--attachments |
Argument | Path(s) to files to be included in the email. |
Logs |
File | Internal records of sent emails and failure reasons. |
SMTP Sender Advanced Features
- Built-in retry logic that handles temporary network failures automatically to ensure high delivery rates.
- Native Markdown-to-HTML transformation allowing for rich text formatting without writing manual HTML code.
- Multi-attachment support for sending complex reports or datasets in a single execution.
- Comprehensive logging of all outbound activity for security auditing and debugging within the Openclaw Skills framework.
SKILL.md
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