Delete a specific email message by UID. Auto-connects if not already connected.
AI agents call delete_message to permanently remove resources in Mcp Mail Server — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
This tool irreversibly removes email data from a mailbox. Misuse by an AI agent could result in unrecoverable loss of important messages, user communications, or evidence. While some IMAP servers may retain deleted items in trash temporarily, the primary effect is destructive data removal. This is more severe than Write (which is reversible) and justifies the Destructive category.
From the tool's definition Tool description states 'Delete a specific email message by UID' - the verb 'delete' combined with irreversible removal of email data indicates a destructive operation.
Attacks that exploit this kind of access
Delete a specific email message by UID. Auto-connects if not already connected. It is categorised as a Destructive tool in the Mcp Mail Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Mcp Mail Server MCP server in PolicyLayer and add a rule for delete_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 Mail Server. Nothing to install.
delete_message 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_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 delete_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.
delete_message is provided by the Mcp Mail Server MCP server (mcp-mail-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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