> For the complete documentation index, see [llms.txt](https://docs.codemash.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.codemash.io/sdks-and-cli/notifications/contacts.md).

# Contacts

Notifications is Norbix's unified Email + Push + SMS messaging system — one template engine and data-binding context across all three channels, for both transactional sends and high-volume campaigns.

| Method                                                                                 | Endpoint                                                                         |
| -------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------- |
| [Grant Contact Consent](/sdks-and-cli/notifications/contacts/grant-contact-consent.md) | `POST /notifications/contacts/{contactId}/marketing-state/{channel}/consent`     |
| [Unsubscribe Contact](/sdks-and-cli/notifications/contacts/unsubscribe-contact.md)     | `POST /notifications/contacts/{contactId}/marketing-state/{channel}/unsubscribe` |