Search emails in all inbox folders (fast, focused search)
AI agents call mail_search_inbox to retrieve information from MCP Apple Mail without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and searches email messages but does not create, modify, delete, execute code, or move money. It is purely informational. The 'search' operation is a classic Read category action. While the server includes destructive tools (mail_delete) and write operations (mail_send, mail_move), this specific tool performs only data retrieval.
From the tool's definition Tool name 'mail_search_inbox' and description 'Search emails in all inbox folders (fast, focused search)' indicate a read-only operation that queries existing data without modification or deletion.
Attacks that exploit this kind of access
Search emails in all inbox folders (fast, focused search). It is categorised as a Read tool in the MCP Apple Mail MCP Server, which means it retrieves data without modifying state.
Register the MCP Apple Mail MCP server in PolicyLayer and add a rule for mail_search_inbox: 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 MCP Apple Mail. Nothing to install.
mail_search_inbox 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_search_inbox 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_search_inbox. 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_search_inbox is provided by the MCP Apple Mail MCP server (lionsr/mcp-apple). 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.
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