Lob is a powerful API for automating direct mail campaigns and verifying addresses. With Relevance AI, you can elevate your direct mail strategy by incorporating AI-driven insights and automation into your workflows.



Lob empowers you to manage direct mail with precision and efficiency. Relevance AI amplifies this by enabling intelligent decision-making and automation, ensuring your campaigns are both effective and scalable.
Physical World Orchestration
Empowers AI agents to seamlessly bridge digital decisions with real-world direct mail actions
Campaign Automation Mastery
Enables dynamic creation and execution of sophisticated direct mail campaigns at scale
Template Personalization
Creates highly personalized mail pieces through dynamic HTML templates and variable data integration
Relevance AI seamlessly integrates with Lob to enhance your direct mail campaigns within automated 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 Lob account
- A Relevance AI account with access to your projects and datasets
- Authorization (you'll connect securely using API keys—no sensitive info stored manually)
Security & Reliability
The Lob and Relevance AI integration utilizes a powerful API interface to automate direct mail campaigns and verify addresses seamlessly. With secure OAuth authentication, only authorized workflows can access your Lob data, ensuring a smooth and secure experience.
Relevance AI manages API operations (like creating, tracking, and verifying postcards and letters) in the background, allowing you to focus on your campaign without worrying about errors, formatting, or limits.
Built-in validation and type conversion ensure that your address data is accurate and compliant with Lob's requirements, enhancing the effectiveness of your direct mail efforts.
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.

To get the most out of the Lob + Relevance AI integration without writing code:
- Start with a clean address database: Ensure all addresses are formatted correctly and include required fields for successful mail delivery.
- Utilize templates: Create reusable postcard and letter templates to streamline your direct mail campaigns.
- Verify addresses: Always run address verification before sending mail to minimize returns and ensure deliverability.
- Test your campaigns: Use test addresses and small batches to validate your mail pieces before launching larger campaigns.
- Monitor API usage: Keep an eye on your API call limits and implement request throttling to avoid rate limiting issues.