m365_send_email

SERVERLocal SOURCElocal-mcp

Medium RISK CLASS

Category Write

Parameters 53 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/com-local-mcp-local-mcp/m365-send-email.md

WHAT IT DOES

What m365_send_email does on Local

AI agents use m365_send_email to create or update resources in Local, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Local environment.

Parameter	Type	Required	Description
`cc`	string	—	CC recipients (optional, comma-separated)
`to`	string	Yes	Recipient email address. For multiple, separate with commas.
`body`	string	Yes	Email body (plain text)
`confirm`	boolean	—	Set to true to actually send (default: shows preview only)
`subject`	string	Yes	Email subject

Parameters from the server's own tool schema.

RISK

Why m365_send_email is rated Medium

Sending email is a write operation that creates new messages and sends them to recipients. While reversible (emails can be unsent/recalled in some cases), the tool has significant blast radius: an AI agent could send emails to arbitrary recipients, impersonate the user, spread misinformation, or facilitate phishing/fraud.

From the tool's definition Tool name 'm365_send_email' and description explicitly states 'send from their Microsoft 365 / Outlook account' and 'set confirm=true to actually send'. This creates and transmits email messages, a reversible write operation.

Risk signalsAccepts raw HTML/template content (body)

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs m365_send_email safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Local, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For m365_send_email, this is the rule to start with:

m365_send_email Rate-limited

m365_send_email 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": {
    "m365_send_email": {
      "limits": [
        {
          "counter": "m365_send_email_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Local, apply this rule, and every m365_send_email call is checked against it from then on.

FAQ

Questions about m365_send_email

What does the m365_send_email tool do? +

Use this when the user wants to send from their Microsoft 365 / Outlook account via the cloud — requires a connected M365 account. Shows a preview first — set confirm=true to actually send. For sending from an account configured in the Mac's Mail.app, use send_email. It is categorised as a Write tool in the Local MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

What parameters does m365_send_email accept? +

m365_send_email accepts 5 parameters: cc, to, body, confirm, subject. Required: to, body, subject. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on m365_send_email? +

Register the Local MCP server in PolicyLayer and add a rule for m365_send_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 Local. Nothing to install.

What risk level is m365_send_email? +

m365_send_email is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit m365_send_email? +

Yes. Add a rate_limit block to the m365_send_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.

How do I block m365_send_email completely? +

Set action: deny in the PolicyLayer policy for m365_send_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.

What MCP server provides m365_send_email? +

m365_send_email is provided by the Local MCP server (local-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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