Get a specific email by its ID with full body and headers
AI agents call get_email_by_id to retrieve information from ProtonMail 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 and queries email data (body and headers) by ID. It performs a read-only operation with no ability to delete, modify, send, or execute actions. While email content may be sensitive, the tool itself is a passive retrieval mechanism.
From the tool's definition Tool name 'get_email_by_id' and description 'Get a specific email by its ID with full body and headers' indicate data retrieval with no modification or side effects.
Attacks that exploit this kind of access
Get a specific email by its ID with full body and headers. It is categorised as a Read tool in the ProtonMail MCP Server MCP Server, which means it retrieves data without modifying state.
Register the ProtonMail MCP Server MCP server in PolicyLayer and add a rule for get_email_by_id: 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 ProtonMail MCP Server. Nothing to install.
get_email_by_id 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 get_email_by_id 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 get_email_by_id. 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.
get_email_by_id is provided by the ProtonMail MCP Server MCP server (ronamosa/protonmail-pro-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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