# gmail_users_messages_send

Send a new email to recipients

Agent View of the PolicyLayer registry record for `gmail_users_messages_send`. HTML page: https://policylayer.com/tools/google-workspace-gmail/gmail-users-messages-send

## Facts

- Tool: `gmail_users_messages_send`
- Server: Google Workspace Gmail (gws CLI) (`@gws mcp -s gmail`) — https://policylayer.com/tools/google-workspace-gmail.md
- Install: `npx -y @gws mcp -s gmail`
- Homepage: https://www.npmjs.com/package/@gws mcp -s gmail
- Risk category: Execute (High risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Rate-limited

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "gmail_users_messages_send",
    "arguments": {}
  }
}
```

## Why gmail_users_messages_send is rated High

Sending an email is an external operation that delivers a message to real recipients and cannot be recalled. It triggers an irreversible external communication action, which fits Execute (external operation). While not Destructive (no data deletion) or Financial, the blast radius is high because a misused agent could send arbitrary emails to any recipients, causing reputational, legal, or social harm.

From the tool's own definition: "'Send a new email to recipients'"

Risk signals: Sends email from user's account

## Use case

AI agents invoke gmail_users_messages_send to trigger actions in Google Workspace Gmail (gws CLI). What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.

## Recommended policy (PolicyLayer)

Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Google Workspace Gmail (gws CLI):

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "gmail_users_messages_send": {
      "limits": [
        {
          "counter": "gmail_users_messages_send_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on Google Workspace Gmail (gws CLI) (78)

- `gmail_users_drafts_delete` — Destructive — https://policylayer.com/tools/google-workspace-gmail/gmail-users-drafts-delete.md
- `gmail_users_labels_delete` — Destructive — https://policylayer.com/tools/google-workspace-gmail/gmail-users-labels-delete.md
- `gmail_users_messages_batchDelete` — Destructive — https://policylayer.com/tools/google-workspace-gmail/gmail-users-messages-batchdelete.md
- `gmail_users_messages_delete` — Destructive — https://policylayer.com/tools/google-workspace-gmail/gmail-users-messages-delete.md
- `gmail_users_settings_cse_identities_delete` — Destructive — https://policylayer.com/tools/google-workspace-gmail/gmail-users-settings-cse-identities-delete.md
- `gmail_users_settings_cse_keypairs_obliterate` — Destructive — https://policylayer.com/tools/google-workspace-gmail/gmail-users-settings-cse-keypairs-obliterate.md
- `gmail_users_settings_delegates_delete` — Destructive — https://policylayer.com/tools/google-workspace-gmail/gmail-users-settings-delegates-delete.md
- `gmail_users_settings_filters_delete` — Destructive — https://policylayer.com/tools/google-workspace-gmail/gmail-users-settings-filters-delete.md
- `gmail_users_settings_forwardingAddresses_delete` — Destructive — https://policylayer.com/tools/google-workspace-gmail/gmail-users-settings-forwardingaddresses-delete.md
- `gmail_users_settings_sendAs_delete` — Destructive — https://policylayer.com/tools/google-workspace-gmail/gmail-users-settings-sendas-delete.md
- `gmail_users_settings_sendAs_smimeInfo_delete` — Destructive — https://policylayer.com/tools/google-workspace-gmail/gmail-users-settings-sendas-smimeinfo-delete.md
- `gmail_users_threads_delete` — Destructive — https://policylayer.com/tools/google-workspace-gmail/gmail-users-threads-delete.md
- `gmail_users_drafts_get` — Read — https://policylayer.com/tools/google-workspace-gmail/gmail-users-drafts-get.md
- `gmail_users_drafts_list` — Read — https://policylayer.com/tools/google-workspace-gmail/gmail-users-drafts-list.md
- `gmail_users_getProfile` — Read — https://policylayer.com/tools/google-workspace-gmail/gmail-users-getprofile.md
- `gmail_users_history_list` — Read — https://policylayer.com/tools/google-workspace-gmail/gmail-users-history-list.md
- `gmail_users_labels_get` — Read — https://policylayer.com/tools/google-workspace-gmail/gmail-users-labels-get.md
- `gmail_users_labels_list` — Read — https://policylayer.com/tools/google-workspace-gmail/gmail-users-labels-list.md
- `gmail_users_messages_attachments_get` — Read — https://policylayer.com/tools/google-workspace-gmail/gmail-users-messages-attachments-get.md
- `gmail_users_messages_get` — Read — https://policylayer.com/tools/google-workspace-gmail/gmail-users-messages-get.md
- `gmail_users_messages_list` — Read — https://policylayer.com/tools/google-workspace-gmail/gmail-users-messages-list.md
- `gmail_users_settings_cse_identities_get` — Read — https://policylayer.com/tools/google-workspace-gmail/gmail-users-settings-cse-identities-get.md
- `gmail_users_settings_cse_identities_list` — Read — https://policylayer.com/tools/google-workspace-gmail/gmail-users-settings-cse-identities-list.md
- `gmail_users_settings_cse_keypairs_get` — Read — https://policylayer.com/tools/google-workspace-gmail/gmail-users-settings-cse-keypairs-get.md
- `gmail_users_settings_cse_keypairs_list` — Read — https://policylayer.com/tools/google-workspace-gmail/gmail-users-settings-cse-keypairs-list.md
- `gmail_users_settings_delegates_get` — Read — https://policylayer.com/tools/google-workspace-gmail/gmail-users-settings-delegates-get.md
- `gmail_users_settings_delegates_list` — Read — https://policylayer.com/tools/google-workspace-gmail/gmail-users-settings-delegates-list.md
- `gmail_users_settings_filters_get` — Read — https://policylayer.com/tools/google-workspace-gmail/gmail-users-settings-filters-get.md
- `gmail_users_settings_filters_list` — Read — https://policylayer.com/tools/google-workspace-gmail/gmail-users-settings-filters-list.md
- `gmail_users_settings_forwardingAddresses_get` — Read — https://policylayer.com/tools/google-workspace-gmail/gmail-users-settings-forwardingaddresses-get.md
- …and 48 more: https://policylayer.com/tools/google-workspace-gmail.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=google-workspace-gmail · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/google-workspace-gmail