create-draft-mail · Outlook OAuth MCP Server MCP

WHAT IT DOES

What create-draft-mail does on Outlook OAuth MCP Server

AI agents use create-draft-mail to create or update resources in Outlook OAuth MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Outlook OAuth MCP Server environment.

WHY IT NEEDS A POLICY

Why create-draft-mail needs a policy

This tool creates and modifies data (draft emails) in a reversible manner—drafts can be edited, discarded, or deleted. It does not execute arbitrary operations, delete data irreversibly, or involve financial transactions. The blast radius is limited to draft email creation in the user's own Outlook account via OAuth2 delegated access.

From the tool's definition Tool description states 'Create an email draft and save it to the Drafts folder.' The verb 'create' and action of saving data to a folder indicates reversible data modification.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create-draft-mail Rate-limited

create-draft-mail stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "create-draft-mail": {
      "limits": [
        {
          "counter": "create-draft-mail_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Outlook OAuth MCP Server, so you can run agents against it safely.

FAQ

Questions about create-draft-mail

What does the create-draft-mail tool do? +

Create an email draft and save it to the Drafts folder. Returns the draft message ID which can be used to send or update it later. It is categorised as a Write tool in the Outlook OAuth MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create-draft-mail? +

Register the Outlook OAuth MCP Server MCP server in PolicyLayer and add a rule for create-draft-mail: 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 Outlook OAuth MCP Server. Nothing to install.

What risk level is create-draft-mail? +

create-draft-mail is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit create-draft-mail? +

Yes. Add a rate_limit block to the create-draft-mail 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.

How do I block create-draft-mail completely? +

Set action: deny in the PolicyLayer policy for create-draft-mail. 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.

What MCP server provides create-draft-mail? +

create-draft-mail is provided by the Outlook OAuth MCP Server MCP server (leonine-studios/useful-outlook-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.