restore_mailbox

Restore a mailbox from the recycle bin back to active. Use list_trashed_mailboxes to find trashed mailbox IDs. Fails (422) if the domain is now at its mailbox limit.

SERVERTrekMail MCP Server SOURCEtrekmail/mcp-server

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/trekmail-mcp-server/restore-mailbox.md

WHAT IT DOES

What restore_mailbox does on TrekMail MCP Server

AI agents use restore_mailbox 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.

RISK

Why restore_mailbox is rated Medium

The tool restores previously deleted mailboxes, which is a write operation that modifies data state. While the restoration itself is reversible (the mailbox could be deleted again), unauthorized restoration of mailboxes could grant unwanted access to email infrastructure or disrupt organizational controls.

From the tool's definition Tool description states 'Restore a mailbox from the recycle bin back to active' - this modifies the state of a mailbox by reactivating it from a deleted state. This is a reversible write operation (the mailbox can be deleted again).

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs restore_mailbox safely

PolicyLayer is an MCP gateway: it sits between your AI agents and TrekMail MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For restore_mailbox, this is the rule to start with:

restore_mailbox Rate-limited

restore_mailbox 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": {
    "restore_mailbox": {
      "limits": [
        {
          "counter": "restore_mailbox_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect TrekMail MCP Server, apply this rule, and every restore_mailbox call is checked against it from then on.

FAQ

Questions about restore_mailbox

What does the restore_mailbox tool do? +

Restore a mailbox from the recycle bin back to active. Use list_trashed_mailboxes to find trashed mailbox IDs. Fails (422) if the domain is now at its mailbox limit. 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 restore_mailbox? +

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

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

Can I rate-limit restore_mailbox? +

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

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

restore_mailbox 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.

KEEP EXPLORING

More on TrekMail MCP Server, and thousands of servers like it.

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Guides

Govern customer-ops agents →Argument validation →Scoped token →