enable-sandbox-email-address · Mcp Mailtrap MCP

WHAT IT DOES

What enable-sandbox-email-address does on Mcp Mailtrap

AI agents use enable-sandbox-email-address to create or update resources in Mcp Mailtrap — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Mcp Mailtrap environment.

WHY IT NEEDS A POLICY

Why enable-sandbox-email-address needs a policy

The tool modifies sandbox configuration by enabling an email address feature. This is a reversible Write operation (the feature can be disabled). While it affects email handling, it does not execute external code, delete data, or move money.

From the tool's definition Tool description states 'Enable the receive-by-email address for a sandbox' - this modifies configuration settings of a sandbox resource by enabling a feature.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

enable-sandbox-email-address Rate-limited

enable-sandbox-email-address 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": {
    "enable-sandbox-email-address": {
      "limits": [
        {
          "counter": "enable-sandbox-email-address_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 Mcp Mailtrap, so you can run agents against it safely.

FAQ

Questions about enable-sandbox-email-address

What does the enable-sandbox-email-address tool do? +

Enable the receive-by-email address for a sandbox. It is categorised as a Write tool in the Mcp Mailtrap MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on enable-sandbox-email-address? +

Register the Mcp Mailtrap MCP server in PolicyLayer and add a rule for enable-sandbox-email-address: 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 Mcp Mailtrap. Nothing to install.

What risk level is enable-sandbox-email-address? +

enable-sandbox-email-address is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit enable-sandbox-email-address? +

Yes. Add a rate_limit block to the enable-sandbox-email-address 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 enable-sandbox-email-address completely? +

Set action: deny in the PolicyLayer policy for enable-sandbox-email-address. 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 enable-sandbox-email-address? +

enable-sandbox-email-address is provided by the Mcp Mailtrap MCP server (mcp-mailtrap). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.