Delete a suppression by ID. Mailtrap will resume delivery to this email unless it gets suppressed again.
AI agents call delete-suppression to permanently remove resources in Mcp Mailtrap — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
This tool irreversibly deletes data (a suppression record). Once deleted, the suppression is removed and cannot be recovered through the tool itself. The consequence is that Mailtrap will resume email delivery to a previously suppressed address, which could result in unwanted emails being sent.
From the tool's definition 'Delete a suppression by ID' - the tool permanently removes a suppression record, which is an irreversible action that cannot be undone. The description explicitly states deletion occurs.
Attacks that exploit this kind of access
Delete a suppression by ID. Mailtrap will resume delivery to this email unless it gets suppressed again. It is categorised as a Destructive tool in the Mcp Mailtrap MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Mcp Mailtrap MCP server in PolicyLayer and add a rule for delete-suppression: 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.
delete-suppression 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-suppression 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-suppression. 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-suppression 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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