Show sandbox email message details and content from the sandbox test inbox. Optionally include spam report (SpamAssassin score) and HTML analysis (client compatibility) for email testing workflows.
AI agents call show-sandbox-email-message to retrieve information from Mcp Mailtrap without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and displays sandbox email message details and optional analysis reports. It performs no modifications, deletions, or external operations. The sandbox context and testing workflow purpose confirm it is purely informational. The low blast radius reflects that viewing test email data in an isolated sandbox environment poses minimal risk.
From the tool's definition Tool description explicitly states 'Show sandbox email message details and content' and 'for email testing workflows', indicating read-only retrieval of test email data. No modification, deletion, or external effects are described.
Attacks that exploit this kind of access
Show sandbox email message details and content from the sandbox test inbox. Optionally include spam report (SpamAssassin score) and HTML analysis (client compatibility) for email testing workflows. It is categorised as a Read tool in the Mcp Mailtrap MCP Server, which means it retrieves data without modifying state.
Register the Mcp Mailtrap MCP server in PolicyLayer and add a rule for show-sandbox-email-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 Mcp Mailtrap. Nothing to install.
show-sandbox-email-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 show-sandbox-email-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 show-sandbox-email-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.
show-sandbox-email-message is provided by the Mcp Mailtrap MCP server (mcp-mailtrap). 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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