update_mailbox

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/update-mailbox.md

WHAT IT DOES

What update_mailbox does on TrekMail MCP Server

AI agents use update_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 update_mailbox is rated Medium

This tool modifies mailbox settings (display_name, conversation_view) in a reversible manner. It does not execute arbitrary code, trigger external operations with unpredictable effects, delete data, or move money. The impact is scoped to mailbox configuration preferences.

From the tool's definition Tool description explicitly states 'Update write-safe mailbox fields' and identifies modifiable fields including 'display_name' and 'conversation_view'.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs update_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 update_mailbox, this is the rule to start with:

update_mailbox Rate-limited

update_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": {
    "update_mailbox": {
      "limits": [
        {
          "counter": "update_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 update_mailbox call is checked against it from then on.

FAQ

Questions about update_mailbox

What does the update_mailbox tool do? +

Update write-safe mailbox fields. display_name applies to regular and shared mailboxes. conversation_view controls webmail thread grouping for a regular mailbox and takes effect after page reload; shared mailboxes use the regular member mailbox. 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 update_mailbox? +

Register the TrekMail MCP Server MCP server in PolicyLayer and add a rule for update_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 update_mailbox? +

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

Can I rate-limit update_mailbox? +

Yes. Add a rate_limit block to the update_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 update_mailbox completely? +

Set action: deny in the PolicyLayer policy for update_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 update_mailbox? +

update_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.

This server

All 248 TrekMail MCP Server tools →

Across the catalogue

aroflo_create_or_update_record on AroFlo MCP →team_manager_update_budget on Team Manager MCP → The MCP Attack Database →

Guides

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