Get a specific email by its messageId
AI agents call mail_get_message to retrieve information from Mailgent 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 a single email message by ID. It is a read-only operation that queries existing data without creating, modifying, deleting, or executing any actions. The worst-case misuse is unauthorized access to message content, which is a low-severity data exposure risk if the agent already has legitimate access to the mailbox.
From the tool's definition Tool name 'mail_get_message' and description 'Get a specific email by its messageId' indicate a retrieval operation with no modification or side effects.
Attacks that exploit this kind of access
Get a specific email by its messageId. It is categorised as a Read tool in the Mailgent MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Mailgent MCP Server MCP server in PolicyLayer and add a rule for mail_get_message: 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 Mailgent MCP Server. Nothing to install.
mail_get_message 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 mail_get_message 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 mail_get_message. 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.
mail_get_message is provided by the Mailgent MCP Server MCP server (loomal-ai/loomal-mcp). 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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