send_mail

Compose and send an email via Apple Mail. Requires allowSendMail config.

SERVERAirMCP SOURCEairmcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/heznpc-airmcp/send-mail.md

WHAT IT DOES

What send_mail does on AirMCP

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

RISK

Why send_mail is rated Medium

This tool creates and sends emails, which is a write operation that modifies external state (recipient mailboxes, sent folder). While not destructive in the sense of deletion, it is irreversible once sent and could be misused to send unauthorized communications, impersonate the user, or spam contacts. The high severity reflects potential for social engineering, credential compromise, or harassment.

From the tool's definition Tool name is 'send_mail' and description states 'Compose and send an email via Apple Mail.' The verb 'send' combined with email composition indicates irreversible creation of a message that will be transmitted to recipients.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs send_mail safely

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

send_mail Rate-limited

send_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": {
    "send_mail": {
      "limits": [
        {
          "counter": "send_mail_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 AirMCP, apply this rule, and every send_mail call is checked against it from then on.

FAQ

Questions about send_mail

What does the send_mail tool do? +

Compose and send an email via Apple Mail. Requires allowSendMail config. It is categorised as a Write tool in the AirMCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on send_mail? +

Register the Air MCP server in PolicyLayer and add a rule for send_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 AirMCP. Nothing to install.

What risk level is send_mail? +

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

Can I rate-limit send_mail? +

Yes. Add a rate_limit block to the send_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 send_mail completely? +

Set action: deny in the PolicyLayer policy for send_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 send_mail? +

send_mail is provided by the Air MCP server (airmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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