# inboxFields

**Type:** GraphQL queries

**Description:**
Retrieves available custom fields for inbox entities.
Returns field definitions for customers, conversations, and devices.

## Response
**Type:** InboxField
**Description:**
Available custom field definitions for inbox entities.

### Fields
- customer (Field): Custom fields available on customer records.
- conversation (Field): Custom fields available on conversations.
- device (Field): Custom fields available on device/browser data.