Read the full content of an email message by its ID.
AI agents call ms365_read_email to retrieve information from Microsoft 365 MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves email message content based on a provided ID. It performs a query operation with no side effects—no data is created, modified, deleted, or overwritten. While email may contain sensitive information, the tool itself is purely read-only retrieval.
From the tool's definition Tool name 'ms365_read_email' and description 'Read the full content of an email message by its ID' explicitly indicate retrieval of email data without modification, deletion, or external execution.
Attacks that exploit this kind of access
Read the full content of an email message by its ID. It is categorised as a Read tool in the Microsoft 365 MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Microsoft 365 MCP Server MCP server in PolicyLayer and add a rule for ms365_read_email: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Microsoft 365 MCP Server. Nothing to install.
ms365_read_email is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the ms365_read_email rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for ms365_read_email. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
ms365_read_email is provided by the Microsoft 365 MCP Server MCP server (ronaldzuniga/ms365-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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