A robust CLI tool for sending professional emails with Markdown support, attachments, and automated retry logic.
Install & Download
1. ClawHub CLI
The fastest way to install a skill directly from the registry.
npx clawhub@latest install custom-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 custom-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 Custom SMTP Sender?
The Custom SMTP Sender is a sophisticated utility designed to streamline communication within automated workflows. By integrating this capability into your Openclaw Skills library, you can programmatically dispatch emails that support rich formatting through Markdown-to-HTML conversion. It is built for reliability, ensuring that mission-critical notifications or reports reach their destination even during transient network issues.
This skill prioritizes security and ease of use by utilizing a local configuration file for SMTP credentials. Whether you are sending simple text alerts or complex reports with multiple file attachments, this tool provides a standardized interface for all your messaging needs within the AI agent environment.
Custom SMTP Sender Use Cases
- Sending automated build reports or system status updates to development teams.
- Dispatching personalized newsletters or notifications formatted in Markdown.
- Attaching and sending generated documents, such as PDFs or log files, via CLI.
- Integrating email alerts into broader automated workflows managed by Openclaw Skills.
How Custom SMTP Sender Works
- The skill initializes by locating and reading the SMTP credentials from the smtp-config.json file.
- It processes the input body, optionally converting Markdown syntax into a rendered HTML format.
- The tool bundles any specified file attachments into the email payload.
- It establishes a secure connection to the SMTP server using the provided port and TLS settings.
- Upon a send request, it implements a 3-attempt retry logic to handle potential server timeouts or networking flickers.
- Finally, it records the outcome in a local log file for auditing and troubleshooting purposes.
Custom SMTP Sender Setup
To get started with this addition to your Openclaw Skills, follow these steps:
- Ensure you have a configuration file at
/home/bb/.openclaw/smtp-config.json. - Populate the file with your SMTP details:
{
"server": "smtp.yourprovider.com",
"port": 465,
"username": "[email protected]",
"password": "your-app-password",
"emailFrom": "[email protected]",
"useTLS": true
}
- Secure your credentials by setting the correct file permissions:
chmod 600 /home/bb/.openclaw/smtp-config.json
Custom SMTP Sender Data Schema & Taxonomy
The skill manages configuration through a structured JSON schema. Below is the breakdown of the required metadata:
| Property | Type | Description |
|---|---|---|
| server | String | The hostname of your SMTP provider |
| port | Number | The port used for connection (usually 465 or 587) |
| username | String | Your SMTP authentication identity |
| password | String | The password or application-specific token |
| emailFrom | String | The address that will appear in the From field |
| useTLS | Boolean | Enables or disables Transport Layer Security |
Custom SMTP Sender Advanced Features
- Support for multiple file attachments in a single command execution.
- Integrated Markdown engine to transform simple text into professional HTML layouts.
- Resilient retry mechanism that automatically attempts redelivery up to three times.
- Detailed execution logging for tracking every email sent through Openclaw Skills.
- Lightweight CLI interface optimized for speed and script integration.
SKILL.md
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