update_alias

Update an alias — toggle receiving, sending, or active/inactive status. Cannot change the alias address itself — delete and recreate instead.

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-alias.md

WHAT IT DOES

What update_alias does on TrekMail MCP Server

AI agents use update_alias 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_alias is rated Medium

This tool creates or modifies email alias settings in a reversible manner (status toggles can be undone). It does not delete data (Destructive), execute arbitrary code (Execute), involve financial transactions (Financial), or perform irreversible operations.

From the tool's definition Tool description states it can 'Update an alias' and explicitly allows toggling 'receiving, sending, or active/inactive status', which are reversible modifications to email alias configuration.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs update_alias 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_alias, this is the rule to start with:

update_alias Rate-limited

update_alias 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_alias": {
      "limits": [
        {
          "counter": "update_alias_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_alias call is checked against it from then on.

FAQ

Questions about update_alias

What does the update_alias tool do? +

Update an alias — toggle receiving, sending, or active/inactive status. Cannot change the alias address itself — delete and recreate instead. 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_alias? +

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

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

Can I rate-limit update_alias? +

Yes. Add a rate_limit block to the update_alias 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_alias completely? +

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

update_alias 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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All 248 TrekMail MCP Server tools →

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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 →