---
title: "Update inbox agent guardrails"
method: PUT
path: "/v1/inboxes/{inbox_id}/guardrails"
tags: ["Guardrails"]
---

# Update inbox agent guardrails

`PUT /v1/inboxes/{inbox_id}/guardrails`

## Request

- Base URL: `https://api.deadsimple.email`
- URL: `https://api.deadsimple.email/v1/inboxes/{inbox_id}/guardrails`
- Auth: HTTP bearer

## Path parameters

- `inbox_id` string, required

## Request body

- object
  - `max_sends_per_hour` integer
  - `allowed_domains` string[]
  - `blocked_domains` string[]
  - `require_draft_approval` boolean
  - `max_attachment_size_mb` integer

## Response `200`

Updated guardrails

---

[API](https://skmtc.dev/deadsimple/apis/dead-simple-email-api.md) · [All operations](https://skmtc.dev/deadsimple/apis/dead-simple-email-api/llms.txt) · [OpenAPI document](https://skmtc.dev/deadsimple/apis/dead-simple-email-api/revisions/c697881be131?raw)