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

# Count unread emails

> Number of unread emails, optionally narrowed to specific mailboxes or a campaign. Emails outside a conversation have no read state and are not counted.

Requires one of the following scopes: `emails:read`, `emails:all`, `all:read`, `all:all`.



## OpenAPI

````yaml /openapi.json get /v1/emails/unread/count
openapi: 3.0.0
info:
  title: MailBeast Public API
  description: >-
    Task-shaped REST API for campaigns, leads, deliverability, verification and
    lead discovery. Authenticate with an API key (`Authorization: Bearer
    mb_live_…`); the workspace is resolved from the key.
  version: '1'
  contact: {}
servers:
  - url: https://api.mailbeast.ai
security: []
tags:
  - name: API Keys
    description: Create, list and revoke API keys programmatically.
  - name: Campaigns
    description: Create, configure, launch and monitor email campaigns.
  - name: Leads
    description: Add, read, update and bulk-manage a campaign’s leads.
  - name: Workspace
    description: Read usage, subscription and workspace identity.
  - name: Email Accounts
    description: >-
      Connect and manage the sending mailboxes your campaigns send from
      (SMTP/IMAP or native OAuth).
  - name: Analytics
    description: Engagement reporting – per campaign, over time, and across the workspace.
  - name: Lead Finder
    description: >-
      Discover new companies and leads. List past searches and poll a running
      search’s progress.
paths:
  /v1/emails/unread/count:
    get:
      tags:
        - Emails
      summary: Count unread emails
      description: >-
        Number of unread emails, optionally narrowed to specific mailboxes or a
        campaign. Emails outside a conversation have no read state and are not
        counted.


        Requires one of the following scopes: `emails:read`, `emails:all`,
        `all:read`, `all:all`.
      operationId: emails_unreadCount
      parameters:
        - name: mailbox
          required: false
          in: query
          description: Limit the count to these mailbox addresses, comma-separated.
          schema:
            type: string
            example: jane@acme.com
        - name: campaignId
          required: false
          in: query
          schema:
            example: c1f3b0a2-6d4e-4f8b-9a1c-2e5d7f0a3b6c
            type: string
      responses:
        '200':
          description: ''
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/UnreadCountApiResponseDto'
        '400':
          description: The request body or parameters failed validation.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiErrorDto'
              example:
                error:
                  type: invalid_request_error
                  code: validation_failed
                  message: One or more fields are invalid.
                  status: 400
                  requestId: e4f1c0b2-6a3d-4b8e-9f21-0a1b2c3d4e5f
                  details:
                    - name should not be empty
        '401':
          description: Missing or invalid API key.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiErrorDto'
              example:
                error:
                  type: authentication_error
                  code: unauthenticated
                  message: Missing or invalid API key.
                  status: 401
                  requestId: e4f1c0b2-6a3d-4b8e-9f21-0a1b2c3d4e5f
        '403':
          description: >-
            The key lacks a required scope, or the plan does not include API
            access.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiErrorDto'
              example:
                error:
                  type: authorization_error
                  code: permission_denied
                  message: This API key is missing the required scope.
                  status: 403
                  requestId: e4f1c0b2-6a3d-4b8e-9f21-0a1b2c3d4e5f
        '429':
          description: >-
            Rate limit exceeded - retry after the interval in the Retry-After
            header.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiErrorDto'
              example:
                error:
                  type: rate_limit_error
                  code: rate_limited
                  message: >-
                    Too many requests. Retry after the interval in the
                    Retry-After header.
                  status: 429
                  requestId: e4f1c0b2-6a3d-4b8e-9f21-0a1b2c3d4e5f
                  retryAfter: 30
      security:
        - ApiKey: []
components:
  schemas:
    UnreadCountApiResponseDto:
      type: object
      properties:
        count:
          type: number
          example: 12
          description: Number of unread emails matching the filters.
      required:
        - count
    ApiErrorDto:
      type: object
      properties:
        error:
          $ref: '#/components/schemas/ApiErrorBodyDto'
      required:
        - error
    ApiErrorBodyDto:
      type: object
      properties:
        type:
          type: string
          example: authorization_error
          description: Broad error class.
        code:
          type: string
          example: permission_denied
          description: Stable machine-readable code to switch on.
        message:
          type: string
          example: This API key is missing the required scope.
        status:
          type: number
          example: 403
        requestId:
          type: string
          example: e4f1c0b2-6a3d-4b8e-9f21-0a1b2c3d4e5f
          description: Correlation id - quote it in support requests.
        details:
          description: Field-level validation messages (present on validation errors).
          example:
            - name should not be empty
          type: array
          items:
            type: string
        retryAfter:
          type: number
          description: Seconds to wait before retrying (present on 429 responses).
          example: 30
      required:
        - type
        - code
        - message
        - status
        - requestId
  securitySchemes:
    ApiKey:
      scheme: bearer
      bearerFormat: mb_live_…
      type: http

````

## Related topics

- [Emails](/emails.md)
- [Mark a conversation read](/api-reference/emails/mark-a-conversation-read.md)
- [Send a test email](/api-reference/campaigns/send-a-test-email.md)
- [Analytics](/analytics.md)
- [List emails](/api-reference/emails/list-emails.md)