AI agents call delete_email to permanently remove resources in IMAP Email MCP Server — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Email deletion permanently removes messages and cannot be undone. This is a destructive operation with high blast radius—an AI agent could maliciously or accidentally delete important emails, communications, or evidence.
From the tool's definition Tool name is 'delete_email' and description states 'Delete an email by UID'. The server description also mentions 'message deletion, directly through natural language.' Deletion is irreversible.
Documented attack patterns abuse exactly the kind of access delete_email gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and IMAP Email MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for delete_email:
{
"version": "1",
"default": "deny",
"hide": [
"delete_email"
]
}delete_email disappears from the agent's tool list entirely, and any attempt to call it is denied. The rest of the server keeps working.
Free to start. No card required.
Delete an email by UID. It is categorised as a Destructive tool in the IMAP Email MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the IMAP Email 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 IMAP Email 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 IMAP Email MCP Server MCP server (jdickey1/imap-email-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from IMAP Email MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
10 IMAP Email MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.