Permanently delete a message by IMAP UID. This marks the message as \\Deleted and expunges it. Requires TREKMAIL_ALLOW_DESTRUCTIVE=true.
AI agents call delete_message to permanently remove resources in TrekMail MCP Server — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
The tool irreversibly deletes email messages—a destructive operation that cannot be undone. The presence of the TREKMAIL_ALLOW_DESTRUCTIVE flag requirement confirms the developers classify this as a destructive action. Severity is high due to potential data loss and impact on email archives, compliance records, and user data retention.
From the tool's definition Permanently delete a message by IMAP UID. This marks the message as \Deleted and expunges it. Requires TREKMAIL_ALLOW_DESTRUCTIVE=true.
Attacks that exploit this kind of access
Permanently delete a message by IMAP UID. This marks the message as \\Deleted and expunges it. Requires TREKMAIL_ALLOW_DESTRUCTIVE=true. It is categorised as a Destructive tool in the TrekMail MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the TrekMail MCP 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 TrekMail MCP 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 TrekMail MCP Server MCP server (trekmail/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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