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Introducing the Paubox MCP server

Picture of Hoala Greevy Hoala Greevy August 20, 2025

From the founder Paubox news

Today we are pleased to announce the availability of the Paubox MCP server (mcp.paubox.com). As far as we know, we are the first HITRUST certified solution to release a Model Context Protocol server.

What's happening

Model Context Protocol (MCP) is an open protocol that lets large language models (LLMs) connect to external tools, data sources, services, and email in a safe, structured way.
In other words, MCP standardizes how applications provide context to LLMs. According to official MCP documentation:

"Think of MCP like a USB-C port for AI applications. Just as USB-C provides a standardized way to connect your devices to various peripherals and accessories, MCP provides a standardized way to connect AI models to different data sources and tools. MCP enables you to build agents and complex workflows on top of LLMs and connects your models with the world."

MCP was released in November 2024 by Anthropic.

How do I use it?

To get started, you need to connect to the Paubox MCP server via a client like Claude. Here's how you'd connect via Claude.
There are a range of clients that support MCP connections.
As of today, MCP is aimed towards developers.

How much does it cost?

The Paubox MCP server supports sending HIPAA compliant, HITRUST certified email via Paubox Email API.
In other words, access to the Paubox MCP server is free. You only pay for the amount of secure emails you sent through it.
You can send up to 300 emails per month for free with the Paubox MCP server. A business associate agreement (BAA) is also included.

See also: Official MCP server integrations [GitHub]