A specialized tool for generating temporary email addresses and automatically capturing verification codes or validation links for automated signups.
Install & Download
1. ClawHub CLI
The fastest way to install a skill directly from the registry.
npx clawhub@latest install email-otp
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-otp 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-otp?
The Email OTP skill is a robust utility designed for developers and automated agents who need to handle email-based authentication programmatically. By leveraging the mail.tm API, it allows users to create disposable email identities without requiring an API key. This Openclaw Skills extension is particularly valuable for bypassing the manual step of checking an inbox during account creation or testing workflows.
Beyond just receiving mail, the skill intelligently parses incoming messages to extract common authentication tokens, such as 4-8 digit codes and activation URLs. It operates entirely through a CLI interface, making it a perfect fit for CI/CD pipelines, automated testing suites, and complex agentic workflows within the Openclaw Skills ecosystem.
email-otp Use Cases
- Automated user registration testing for web applications where email verification is mandatory.
- Creating disposable accounts to maintain privacy and avoid spam on secondary services.
- Programmatic monitoring of inboxes for multi-factor authentication (MFA) codes during script execution.
- Seamless extraction of activation links to complete sign-up processes without human intervention.
How email-otp Works
- The skill initializes a temporary account via the mail.tm REST API and generates a secure JWT token for authentication.
- Account details and credentials are saved locally in a restricted state directory to maintain persistence across sessions.
- The user provides the generated temporary email address to a third-party service's registration form.
- The check command initiates a polling process that monitors the inbox at defined intervals.
- When an email arrives, the skill applies regex patterns to identify OTP codes or filters HTML to find relevant validation links.
- Extracted data is saved to specific state files (last_otp or last_link), allowing subsequent steps in an automation to consume the values.
email-otp Setup
To start using this skill within your Openclaw Skills environment, use the following commands:
# Create a new temporary email address
python3 scripts/tempmail_otp.py create
# Wait for and extract an OTP code (5-minute default timeout)
python3 scripts/tempmail_otp.py check --once
# View current account status and inbox history
python3 scripts/tempmail_otp.py list
email-otp Data Schema & Taxonomy
The skill manages its state within the ~/.tempmail_otp/ directory using the following file structure:
| File | Format | Description |
|---|---|---|
account.json |
JSON | Contains the email address, password, and JWT bearer token. |
last_otp |
Plain Text | The most recently detected numeric verification code. |
last_link |
Plain Text | The first relevant validation or confirmation URL found. |
All files are created with 0600 permissions to ensure sensitive account tokens remain secure.
email-otp Advanced Features
- Custom Regex Support: Use the
--patternflag to define specific matching rules for unique OTP formats. - Domain Selection: Choose from various available domains to bypass potential filters on common temporary email providers.
- Targeted Monitoring: Filter incoming mail by sender or subject line to ensure only the correct verification email is processed.
- Headless Integration: Utilize the
--jsonflag to receive structured output for direct consumption by other Openclaw Skills components. - Noise Filtering: Automatically ignores tracking pixels, image files, and unsubscribe links to isolate the primary call-to-action.
SKILL.md
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