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

# Communication object definition

> Information about the Communication object, including identifiers, feature support, and default properties.

**Communication**

Log data about one-to-one communication between users and customers on SMS, WhatsApp, LinkedIn, postal mail, and custom channels.

**Object ID:**
`0-18`

**Fully qualified name (FQN):**
`COMMUNICATION`

> [tab] Overview
>
> **Features**
>
> Doesn't have pipelines
>
> Allows custom properties
>
> Doesn't allow sensitive properties
>
> **Key properties**
>
> **Required properties**
>
> **Primary display property**
>
> **Secondary display properties**
>
> [Searchable properties](https://developers.hubspot.com/docs/api-reference/search/guide.md)

> [tab] Properties
>
> Below are the available default properties that can be set for each communication. To retrieve the complete list of communication properties available in your specific account, including any custom properties, make a `GET` request to `/crm/properties/2026-09/communications`. See the [Properties API documentation](https://developers.hubspot.com/docs/api-reference/latest/crm/properties/guide.md) for full details.
>
> > [!NOTE]
> >
> > Note that your account's available properties may vary based on:
> >
> > * Your HubSpot subscription level and enabled features.
> > * Custom properties added by your organization.
> > * Account age (older accounts may have slightly different property variations).

> [tab] Associations