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

# Contact subscription

> Messaging consent and subscription state on the contact record.

**Contact subscription** (and related consent state) lives on the **contact**—whether someone is subscribed to messaging, unsubscribed, or subject to channel rules. It affects whether and how you can reach them across channels.

## What it controls

* Whether outbound messages and campaigns are allowed for that contact
* How [journeys](/help/contacts/the-contact/contacts-across-heyy) treat **day zero** and timed steps tied to subscription
* Compliance with opt-in/opt-out expectations on channels such as WhatsApp

Subscription is **contact-level data**, not a property of a single chat—though you may view or change it while working in Inbox on a conversation.

## Where to manage it

Update subscription from the contact profile on [**Contacts**](https://app.heyy.io/contacts), the Inbox [contact card](/help/inbox/contact-card), or flows your workspace configures (automations, imports, customer actions).

Channel-specific send rules (for example conversation windows) are covered under [Conversation window](/help/inbox/chat-fundamentals/conversation-window) in the Inbox.