Mailboxlayer is a powerful email validation and verification API that helps businesses ensure the accuracy of their email communications.
Enhance your email validation processes with AI Agents that can automatically verify and manage email data in real-time.



Mailboxlayer provides enterprise-grade email validation and verification. Relevance AI transforms this into intelligent AI agents that can automatically validate and optimize email communications at scale.
Instant Validation Mastery
The agent can instantly validate email addresses in real-time, ensuring accuracy during user interactions.
Enhanced Lead Quality Assurance
The agent ensures only valid leads are captured, improving the quality of prospects entering the system.
Data Hygiene Maintenance
The agent continuously validates and cleanses email lists, maintaining a healthy and updated database.
Relevance AI gives you access to Mailboxlayer's email validation capabilities within your AI agent workflows.
What you’ll need
You don't need to be a developer to set up this integration. Follow this simple guide to get started:
- A Mailboxlayer API key
- A Relevance AI account with project access
- Authorization credentials (API keys will be securely stored)
Security & Reliability
The integration leverages secure OAuth authentication through Mailboxlayer's API, ensuring authorized email validation and verification workflows. Relevance AI manages all API operations seamlessly in the background—handling authentication headers, rate limits, and response formatting automatically.
Built-in data validation and error handling ensure reliable email verification results, even with varying input formats.
No training on your data
Your data remains private and is never utilized for model training purposes.
Security first
We never store anything we don’t need to. The inputs or outputs of your tools are never stored.

Best Practices for Non-Technical Users
To get the most out of the Mailboxlayer + Relevance AI integration without writing code:
- Validate email formats: Ensure email addresses follow standard formatting before processing.
- Use batch processing: Group email verification requests to optimize API usage and performance.
- Monitor API limits: Track your daily request quota to avoid service interruptions.
- Handle responses properly: Set up error handling for invalid or disposable email addresses.
- Keep credentials secure: Regularly rotate API keys and maintain secure authentication.