Deletes an email. By default, moves to Deleted Items (soft delete). Set permanent=true to permanently delete the email (cannot be recovered).
AI agents call delete-email to permanently remove resources in Outlook MCP Server — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
This tool irreversibly deletes user data (emails). While a soft delete to Deleted Items is technically recoverable by the user, the permanent deletion option makes this a Destructive action by definition. An AI agent with access to this tool could maliciously or accidentally destroy important correspondence, with permanent=true resulting in unrecoverable data loss.
From the tool's definition The tool description explicitly states it "permanently delete[s] the email (cannot be recovered)" when permanent=true is set, and even the default soft delete removes the email from the user's mailbox.
Attacks that exploit this kind of access
Deletes an email. By default, moves to Deleted Items (soft delete). Set permanent=true to permanently delete the email (cannot be recovered). It is categorised as a Destructive tool in the Outlook MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Outlook MCP Server MCP server in PolicyLayer and add a rule for delete-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 Outlook MCP Server. Nothing to install.
delete-email is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the delete-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 delete-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.
delete-email is provided by the Outlook MCP Server MCP server (peacockery-studio/outlook-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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