batch-send-bulk-email · Mcp Mailtrap MCP: Risk & Policy

WHAT IT DOES

What batch-send-bulk-email does on Mcp Mailtrap

AI agents use batch-send-bulk-email 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 batch-send-bulk-email needs a policy

The tool creates and sends email messages in bulk, which is a reversible write operation that modifies system state (creates new sent emails). While emails cannot be unsent once delivered, the tool itself permits bulk creation of messages.

From the tool's definition Tool performs 'batch-send-bulk-email' which creates and sends multiple email messages. Description states it sends emails via Mailtrap's bulk-stream API.

Risk signalsBulk/mass operation — affects multiple targets

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

batch-send-bulk-email Rate-limited

batch-send-bulk-email 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": {
    "batch-send-bulk-email": {
      "limits": [
        {
          "counter": "batch-send-bulk-email_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 batch-send-bulk-email

What does the batch-send-bulk-email tool do? +

Send a batch of bulk emails (Mailtrap bulk-stream API) in one call. Shared fields go on. 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 batch-send-bulk-email? +

Register the Mcp Mailtrap MCP server in PolicyLayer and add a rule for batch-send-bulk-email: 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 batch-send-bulk-email? +

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

Can I rate-limit batch-send-bulk-email? +

Yes. Add a rate_limit block to the batch-send-bulk-email 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 batch-send-bulk-email completely? +

Set action: deny in the PolicyLayer policy for batch-send-bulk-email. 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 batch-send-bulk-email? +

batch-send-bulk-email 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.