DocuPost is an integration platform that enables automated mail and postcard sending via a simple API interface. Enhance your mailing capabilities with Relevance AI, allowing for smarter, data-driven decisions in your physical communications.



DocuPost simplifies the process of sending physical mail and postcards through a straightforward API. With Relevance AI, you can leverage intelligent AI Agents to optimize your mailing strategies and automate decision-making.
Document Intelligence Mastery
AI agent gains advanced capabilities to extract, analyze, and process complex documents with 99.9% accuracy
Workflow Orchestration
Agent seamlessly coordinates end-to-end document processing across multiple systems and departments
Multi-Format Processing
Enhanced ability to handle diverse document types from PDFs to images with intelligent recognition
Relevance AI seamlessly integrates with DocuPost to enhance your automated mailing 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 Relevance AI account
- An Airtable account with access to the base and table you'd like to use
- Authorization (you'll connect securely using OAuth—no sensitive info stored manually)
Security & Reliability
The DocuPost integration utilizes a straightforward REST API to automate the sending of physical mail, including letters and postcards, directly from your applications. This integration streamlines the mailing process, allowing you to send documents programmatically with ease.
With secure OAuth authentication, only authorized applications can access your DocuPost account, ensuring that your mailing operations remain secure. The integration supports various USPS mailing options, and built-in validation checks help prevent common errors, such as incorrect address formats or invalid file sizes.
By leveraging the DocuPost API, you can efficiently manage your mailing needs without the hassle of manual processes, allowing for a seamless experience in sending physical mail.
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 DocuPost + Relevance AI integration without writing code:
- Validate addresses: Always ensure that addresses are correct and formatted properly before sending to avoid delivery issues.
- Use tracking numbers: Store and monitor tracking numbers for all sent mail to keep track of delivery status.
- Implement error handling: Make sure to handle API response errors gracefully to avoid disruptions in your workflow.
- Utilize webhooks: Set up webhooks for real-time status updates on mail deliveries when available.
- Optimize file sizes: Keep PDF and image files within the specified size limits to ensure successful uploads and processing.
- Cache OAuth tokens: Store OAuth tokens securely and refresh them as needed to maintain seamless API interactions.