reset-sandbox-email-address · Mcp Mailtrap MCP

WHAT IT DOES

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

AI agents use reset-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 reset-sandbox-email-address needs a policy

This tool generates/regenerates a sandbox email address, which is a write/modification operation. It changes the inbox's receiving address, which could disrupt ongoing tests or cause emails to be delivered to an unexpected address. While not strictly destructive (the old address is replaced rather than data being deleted), it is a reversible modification to configuration.

From the tool's definition Generate a new receive-by-email address for a sandbox

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

reset-sandbox-email-address Rate-limited

reset-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": {
    "reset-sandbox-email-address": {
      "limits": [
        {
          "counter": "reset-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 reset-sandbox-email-address

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

Generate a new 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 reset-sandbox-email-address? +

Register the Mcp Mailtrap MCP server in PolicyLayer and add a rule for reset-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 reset-sandbox-email-address? +

reset-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 reset-sandbox-email-address? +

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

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

reset-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.