> ## Documentation Index
> Fetch the complete documentation index at: https://inbound.new/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Create guard rule

> Create a new email filtering guard rule.



## OpenAPI

````yaml https://app.stainless.com/api/spec/documented/inbound/openapi.documented.yml post /api/e2/guard
openapi: 3.1.0
info:
  title: Inbound Email API
  description: >+

    # Inbound API


    The Inbound API allows you to manage email infrastructure programmatically -
    domains, email addresses, webhooks, and more.


    ## Authentication


    All API requests require a Bearer token in the Authorization header:


    ```bash

    curl -H "Authorization: Bearer YOUR_API_KEY" \
      https://inbound.new/api/e2/domains
    ```


    ## Base URL


    ```

    https://inbound.new/api/e2

    ```


    ## Quick Start


    1. **Create a domain** - Register your domain with Inbound

    2. **Configure DNS** - Add the provided DNS records to your domain

    3. **Create an email address** - Set up addresses to receive emails

    4. **Create an endpoint** - Configure where emails are delivered (webhook,
    forwarding, etc.)

  version: 2.0.0
servers:
  - url: https://inbound.new
    description: Production API server
security:
  - bearerAuth: []
tags:
  - name: Webhooks
    description: Webhooks sent by Inbound to your configured endpoints when events occur.
  - name: Emails
    description: >-
      Send, list, and manage emails. Supports immediate sending, scheduling,
      replies, and retry functionality.
  - name: Mail
    description: >-
      Inbox and thread views for received emails. Filter by domain, address, or
      search.
  - name: Domains
    description: >-
      Manage domains for sending and receiving emails. Domains must be verified
      via DNS before use.
  - name: Endpoints
    description: >-
      Configure where incoming emails are delivered - webhooks, email
      forwarding, or custom handlers.
  - name: Email Addresses
    description: Create and manage email addresses on your verified domains.
  - name: Attachments
    description: Download email attachments using authenticated requests.
paths:
  /api/e2/guard:
    post:
      tags:
        - Guard
      summary: Create guard rule
      description: Create a new email filtering guard rule.
      operationId: postApiE2Guard
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                name:
                  minLength: 1
                  description: Rule name
                  type: string
                description:
                  description: Rule description
                  type: string
                type:
                  type: string
                  enum:
                    - explicit
                    - ai_prompt
                config:
                  description: Rule configuration (JSON)
                priority:
                  description: Rule priority (higher = evaluated first)
                  type: number
                action:
                  description: Rule action configuration
              required:
                - name
                - type
                - config
          application/x-www-form-urlencoded:
            schema:
              type: object
              properties:
                name:
                  minLength: 1
                  description: Rule name
                  type: string
                description:
                  description: Rule description
                  type: string
                type:
                  type: string
                  enum:
                    - explicit
                    - ai_prompt
                config:
                  description: Rule configuration (JSON)
                priority:
                  description: Rule priority (higher = evaluated first)
                  type: number
                action:
                  description: Rule action configuration
              required:
                - name
                - type
                - config
          multipart/form-data:
            schema:
              type: object
              properties:
                name:
                  minLength: 1
                  description: Rule name
                  type: string
                description:
                  description: Rule description
                  type: string
                type:
                  type: string
                  enum:
                    - explicit
                    - ai_prompt
                config:
                  description: Rule configuration (JSON)
                priority:
                  description: Rule priority (higher = evaluated first)
                  type: number
                action:
                  description: Rule action configuration
              required:
                - name
                - type
                - config
      responses:
        '201':
          description: Response for status 201
          content:
            application/json:
              schema:
                type: object
                properties:
                  success:
                    const: true
                    type: boolean
                  data:
                    type: object
                    properties:
                      id:
                        type: string
                      userId:
                        type: string
                      name:
                        type: string
                      description:
                        nullable: true
                        anyOf:
                          - type: string
                          - type: 'null'
                      type:
                        type: string
                      config:
                        type: string
                      isActive:
                        nullable: true
                        anyOf:
                          - type: boolean
                          - type: 'null'
                      priority:
                        nullable: true
                        anyOf:
                          - type: number
                          - type: 'null'
                      lastTriggeredAt:
                        nullable: true
                        anyOf:
                          - type: string
                          - type: 'null'
                      triggerCount:
                        nullable: true
                        anyOf:
                          - type: number
                          - type: 'null'
                      actions:
                        nullable: true
                        anyOf:
                          - type: string
                          - type: 'null'
                      createdAt:
                        nullable: true
                        anyOf:
                          - type: string
                          - type: 'null'
                      updatedAt:
                        nullable: true
                        anyOf:
                          - type: string
                          - type: 'null'
                    required:
                      - id
                      - userId
                      - name
                      - description
                      - type
                      - config
                      - isActive
                      - priority
                      - lastTriggeredAt
                      - triggerCount
                      - actions
                      - createdAt
                      - updatedAt
                required:
                  - success
                  - data
        '400':
          description: Response for status 400
          content:
            application/json:
              schema:
                type: object
                properties:
                  error:
                    type: string
                required:
                  - error
        '401':
          description: Response for status 401
          content:
            application/json:
              schema:
                type: object
                properties:
                  error:
                    type: string
                required:
                  - error
        '500':
          description: Response for status 500
          content:
            application/json:
              schema:
                type: object
                properties:
                  error:
                    type: string
                required:
                  - error
components:
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: API Key
      description: >-
        Your Inbound API key. Include it in the Authorization header as: Bearer
        <your-api-key>

````