An AI-powered utility for generating high-converting, spam-free email subject lines using the Sloan expert agent.
Install & Download
1. ClawHub CLI
The fastest way to install a skill directly from the registry.
npx clawhub@latest install email-subject-generator
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 email-subject-generator 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 Email Subject Line Generator?
The Email Subject Line Generator is a specialized copywriting tool designed to maximize email engagement through psychological triggers and data-driven optimization. As a prominent entry in the Openclaw Skills ecosystem, it leverages the Sloan agent—a professional email marketing expert—to help developers and marketers generate 10 unique variations for any campaign. It ensures that every subject line is optimized for high open rates while remaining free of common spam triggers that could harm deliverability.
This skill is particularly valuable for those who need to automate their marketing workflow without sacrificing the human touch of a professional copywriter. By integrating this into your Openclaw Skills library, you gain access to an agent that understands the nuances of sales, newsletters, and product announcements, providing a scalable solution for high-volume email operations.
Email Subject Line Generator Use Cases
- Crafting compelling subject lines for product launch announcements to drive immediate clicks.
- Generating curiosity-driven headers for weekly newsletters to maintain high subscriber engagement.
- Developing high-pressure yet ethical sales email subjects for conversion-focused campaigns.
- Creating personalized subject lines using dynamic placeholders for large-scale cold outreach.
- Testing multiple variations of a single topic to find the most effective psychological hook.
How Email Subject Line Generator Works
- The user provides a core topic or email description through the CLI interface.
- The skill identifies the specified purpose (such as sales or newsletter) to tune the agent's tone and strategy.
- The Sloan agent processes the request, applying psychological triggers and filtering for forbidden spam words.
- The generator returns a list of 10 distinct subject line options ready for A/B testing or immediate use.
- The transaction is securely processed via the integrated payment provider on a per-generation basis.
Email Subject Line Generator Setup
To start using this tool within your Openclaw Skills collection, follow these steps:
# Ensure OpenClaw and the Sloan agent are installed
# Generate a basic subject line
email-subject-generator "product launch announcement"
# Generate a specific newsletter subject line
email-subject-generator "monthly update" --purpose newsletter
You may optionally configure environment variables for custom payment processing:
export SKILLPAY_MERCHANT_KEY="your_merchant_key"
export OPENCLAW_GATEWAY_TOKEN="your_gateway_token"
Email Subject Line Generator Data Schema & Taxonomy
The skill processes input data and returns structured variations based on the following schema:
| Attribute | Description | Type |
|---|---|---|
prompt |
The primary topic or content description | String |
purpose |
The category of email (sales, newsletter, announcement) | String |
variations |
The 10 AI-generated subject lines | Array |
spam_check |
Boolean indicator of spam-trigger safety | Boolean |
cost |
Transaction fee in USDT (0.001) | Number |
Email Subject Line Generator Advanced Features
- Powered by the Sloan AI Columnist agent for professional-grade marketing expertise.
- Advanced spam-trigger detection to ensure high deliverability and avoid junk folders.
- Dynamic placeholder support for seamless integration with CRM personalization tags.
- Pay-per-use architecture via skillpay.me, making it a cost-effective choice among Openclaw Skills.
- Local API fallback support via the OpenClaw Gateway for improved reliability in various environments.
SKILL.md
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