Read the complete content of an email, including headers, body, and attachments. Specify folder and email UID.
AI agents call proton_read_email to retrieve information from Proton 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 data without any side effects. It does not create, modify, delete, or execute operations. Even though it accesses potentially sensitive email content, the core function is read-only information retrieval, which is the defining characteristic of the Read category.
From the tool's definition Tool name contains 'read' and description states 'Read the complete content of an email, including headers, body, and attachments.' This is a pure retrieval operation with no modification, deletion, or execution.
Attacks that exploit this kind of access
Read the complete content of an email, including headers, body, and attachments. Specify folder and email UID. It is categorised as a Read tool in the Proton MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Proton MCP Server MCP server in PolicyLayer and add a rule for proton_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 Proton MCP Server. Nothing to install.
proton_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 proton_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 proton_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.
proton_read_email is provided by the Proton MCP Server MCP server (sugar-crash-studios/proton-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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