Read the full content of an email by its ID.
AI agents call read_email to retrieve information from Mail Tm MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool retrieves and displays email content without altering data, deleting messages, or triggering external actions. It is a simple read operation on temporary email data. Severity is low because temporary email accounts are disposable and have minimal blast radius if accessed by an unauthorized AI agent.
From the tool's definition Tool name is 'read_email' and description states 'Read the full content of an email by its ID.' This is a retrieval operation with no modification or side effects.
Attacks that exploit this kind of access
Read the full content of an email by its ID. It is categorised as a Read tool in the Mail Tm MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Mail Tm MCP Server MCP server in PolicyLayer and add a rule for 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 Mail Tm MCP Server. Nothing to install.
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 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 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.
read_email is provided by the Mail Tm MCP Server MCP server (opastorello/mailtm-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.
Teams ship this data inside their own products. See what a licence covers →