bulk_create_mailboxes · TrekMail MCP Server MCP

WHAT IT DOES

What bulk_create_mailboxes does on TrekMail MCP Server

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

WHY IT NEEDS A POLICY

Why bulk_create_mailboxes needs a policy

This tool creates new mailbox resources, which is a write operation that modifies the email infrastructure state. While reversible (mailboxes can be deleted), the bulk nature (up to 100 at once) and the fact that it affects core email infrastructure gives it high severity. It does not irreversibly destroy data (Destructive), execute arbitrary code (Execute), or move money (Financial).

From the tool's definition Tool name 'bulk_create_mailboxes' and description 'Create multiple mailboxes at once' explicitly indicates creation of multiple email accounts.

Risk signalsBulk/mass operation — affects multiple targets

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

bulk_create_mailboxes Rate-limited

bulk_create_mailboxes 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": {
    "bulk_create_mailboxes": {
      "limits": [
        {
          "counter": "bulk_create_mailboxes_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 TrekMail MCP Server, so you can run agents against it safely.

FAQ

Questions about bulk_create_mailboxes

What does the bulk_create_mailboxes tool do? +

Create multiple mailboxes at once (1-100). Each item specifies a domain and local part. password_mode=. It is categorised as a Write tool in the TrekMail 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 bulk_create_mailboxes? +

Register the TrekMail MCP Server MCP server in PolicyLayer and add a rule for bulk_create_mailboxes: 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 TrekMail MCP Server. Nothing to install.

What risk level is bulk_create_mailboxes? +

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

Can I rate-limit bulk_create_mailboxes? +

Yes. Add a rate_limit block to the bulk_create_mailboxes 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 bulk_create_mailboxes completely? +

Set action: deny in the PolicyLayer policy for bulk_create_mailboxes. 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 bulk_create_mailboxes? +

bulk_create_mailboxes is provided by the TrekMail MCP Server MCP server (trekmail/mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.