Delete a sorting rule.
AI agents call imap_delete_sorting_rule to permanently remove resources in Email MCP Server — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
This tool permanently removes a sorting rule, which is data destruction. While the blast radius is narrower than deleting actual emails, the irreversible nature of deletion and the potential disruption to email workflow organization justify the Destructive category and high severity rating.
From the tool's definition The tool name explicitly states 'delete' and the description confirms it 'Delete[s] a sorting rule.' Deletion of configured rules is an irreversible action that cannot be undone without manual reconfiguration.
Attacks that exploit this kind of access
Delete a sorting rule. It is categorised as a Destructive tool in the Email MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Email MCP Server MCP server in PolicyLayer and add a rule for imap_delete_sorting_rule: 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 Email MCP Server. Nothing to install.
imap_delete_sorting_rule 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 imap_delete_sorting_rule 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 imap_delete_sorting_rule. 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.
imap_delete_sorting_rule is provided by the Email MCP Server MCP server (sventern/mcp_email). 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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