convert_shared_mailbox_to_regular · TrekMail MCP Server MCP

WHAT IT DOES

What convert_shared_mailbox_to_regular does on TrekMail MCP Server

AI agents use convert_shared_mailbox_to_regular 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 convert_shared_mailbox_to_regular needs a policy

This tool creates or modifies data reversibly. While it removes members and changes settings, these changes can be undone by converting back to a shared mailbox or re-adding members. The tool does not permanently delete the mailbox itself or irreversibly destroy data.

From the tool's definition Tool description states: 'Convert a shared (team) mailbox back to a regular user mailbox. ALL existing members are removed and direct login is re-enabled using the supplied password.' The operation modifies mailbox configuration (converting from shared to…

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

convert_shared_mailbox_to_regular Rate-limited

convert_shared_mailbox_to_regular 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": {
    "convert_shared_mailbox_to_regular": {
      "limits": [
        {
          "counter": "convert_shared_mailbox_to_regular_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 convert_shared_mailbox_to_regular

What does the convert_shared_mailbox_to_regular tool do? +

Convert a shared (team) mailbox back to a regular user mailbox. ALL existing members are removed and direct login is re-enabled using the supplied password. The password must be at least 12 characters and contain uppercase, lowercase, and at least one digit. Use list_mailboxes to find the mailbox ID. 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 convert_shared_mailbox_to_regular? +

Register the TrekMail MCP Server MCP server in PolicyLayer and add a rule for convert_shared_mailbox_to_regular: 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 convert_shared_mailbox_to_regular? +

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

Can I rate-limit convert_shared_mailbox_to_regular? +

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

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

convert_shared_mailbox_to_regular 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.