Postmark is a transactional email service designed to help businesses send and track emails reliably and efficiently.
Enhance your email communications with AI agents that can automate responses, personalize content, and ensure timely delivery of critical messages.


Postmark ensures reliable delivery of transactional emails with industry-leading deliverability rates. Relevance AI transforms this into intelligent communication by enabling AI agents that can automate responses, personalize content, and trigger context-aware notifications.
Seamless Communication Orchestration
The agent automates email interactions, ensuring timely and relevant communication.
Dynamic Content Personalization
Utilizes user data to tailor email content, enhancing engagement and relevance.
Real-time Response Automation
Enables instant replies to customer inquiries, improving satisfaction and efficiency.
Relevance AI gives you access to Postmark's email delivery capabilities within your automated workflows and AI agents.
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 Postmark account
- A Relevance AI account with API access
- Authorization credentials (you'll connect securely using API tokens—no sensitive info stored manually)
Security & Reliability
The integration uses secure OAuth authentication, ensuring only authorized workflows access your Postmark email data. Relevance AI handles API operations (like GET, POST, PUT, DELETE) in the background—so you don't have to worry about authentication tokens, request formatting, or rate limits.
Built-in validation and error handling ensure your email workflows run smoothly, even when dealing with different message formats and attachments.
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 0CodeKit + Relevance AI integration without writing code:
- Start with a clear setup: Ensure your 0CodeKit account is properly configured with the necessary OAuth credentials and permissions.
- Utilize example code: Leverage the provided code snippets for PDF compression and barcode reading to jumpstart your integration.
- Validate inputs: Always check your input parameters for correctness before making API calls to avoid unnecessary errors.
- Test with sample data: Run your automations using test PDFs and images to ensure everything works smoothly before going live.
- Monitor API usage: Keep an eye on your API calls to avoid hitting rate limits, and implement caching where appropriate.