delete-mail-rule
Delete the specified messageRule object. 💡 TIP: Deletes a message rule permanently. Use the Inbox folder ID (get it from list-mail-folders) for inbox rules.
This record as markdown: /tools/jo3zik-ms-365-mcp-server/delete-mail-rule.md
What delete-mail-rule does on Ms 365
AI agents call delete-mail-rule to permanently remove resources in Ms 365, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
| Parameter | Type | Required | Description |
|---|---|---|---|
confirm | boolean | — | For destructive operations when the confirm gate is enabled (MS365_MCP_REQUIRE_CONFIRM=true; off by default). Set to true only after the user has explicitly app |
If-Match | string | — | ETag |
mailFolderId | string | Yes | Value for the 'mailFolderId' path segment. Pass it under the name 'mailFolderId', not as 'id'. Use the 'id' field of the mail folder object as returned by Micro |
messageRuleId | string | Yes | Value for the 'messageRuleId' path segment. Pass it under the name 'messageRuleId', not as 'id'. Use the 'id' field of the message rule object as returned by Mi |
includeHeaders | boolean | — | Include response headers (including ETag) in the response metadata |
excludeResponse | boolean | — | Exclude the full response body and only return success or failure indication |
Parameters from the server's own tool schema.
Why delete-mail-rule is rated Critical
An AI agent that decides to call delete-mail-rule doesn't hesitate, doesn't double-check, and doesn't stop at one. Whatever it removes from Ms 365 is gone. There is no undo for destructive operations.
Attacks that exploit this kind of access
The rule that runs delete-mail-rule safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Ms 365, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For delete-mail-rule, this is the rule to start with:
delete-mail-rule is removed from the agent's tool list entirely, so the agent never calls it. The rest of the server keeps working.
The button opens the PolicyLayer dashboard: create your workspace, connect Ms 365, apply this rule, and every delete-mail-rule call is checked against it from then on.
Questions about delete-mail-rule
Delete the specified messageRule object. 💡 TIP: Deletes a message rule permanently. Use the Inbox folder ID (get it from list-mail-folders) for inbox rules. It is categorised as a Destructive tool in the Ms 365 MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
delete-mail-rule accepts 6 parameters: confirm, If-Match, mailFolderId, messageRuleId, includeHeaders, excludeResponse. Required: mailFolderId, messageRuleId. The full parameter table on this page comes from the server's own tool schema.
Register the Ms 365 MCP server in PolicyLayer and add a rule for delete-mail-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 Ms 365. Nothing to install.
delete-mail-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 delete-mail-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 delete-mail-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.
delete-mail-rule is provided by the Ms 365 MCP server (@jo3zik/ms-365-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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