# Notification Messages

The LINE channel supports [push via phone number notification messages](https://community.sinch.com/t5/LINE/What-is-LINE-Official-Notification-Message/ta-p/15694). This kind of message can only be sent from LINE Official Accounts created in Japan, Thailand, or Taiwan.

Caution:
These messages can only be used for important notifications. For example, they can be used for delivery updates, payment receipts, and reservation confirmations. They can't be used for marketing purposes.

There are two types of notification messages supported on the LINE channel: [template](#notification-messages-template) notification messages and [flexible](#notification-messages-flexible) notification.

## Notification Messages (template)

Notification Messages (template) are supported through the `channel_specific_message` feature of Sinch's Conversation API. Detailed API documentation can be found [in the API reference guide](/docs/conversation/api-reference/conversation/messages/messages_sendmessage#messages/messages_sendmessage/t=request&path=message&oneof=0/channel_specific_message/property%20name*).

Template messages have a predefined structure consisting of title, description, items, and buttons. Each of these elements is predefined and unique for Japan, Thailand, and Taiwan.

![LINE Notification Message (template)](/assets/line_notification_message_template.c820c2277df0a078003acdb5ae09cd9d53d295223ba39985fa85ab2d0da2b48d.7a4a72d5.jpg)

### Templates

Specifying a template key results in a predefined title and description being displayed at the top of the message.

See [our LINE documentation](https://developers.line.biz/en/docs/partner-docs/line-notification-messages/template/?r=jp#templates) for more details and available templates.

### Items

Each template can contain one large 'emphasized' item and multiple smaller items. An item consists of a predefined label and a custom value.

See [our LINE documentation](https://developers.line.biz/en/docs/partner-docs/line-notification-messages/template/?r=jp#items) for more details and available items.

### Buttons

Each template can contain multiple buttons. A button consists of a predefined label and a custom URL.

See [our LINE documentation](https://developers.line.biz/en/docs/partner-docs/line-notification-messages/template/?r=jp#buttons) for more details and available buttons.

## Notification Messages (flexible)

Notification Messages (flexible) do not have a separate message type in Sinch's Conversation API. They may be any message type, but they must conform to an approved template. To get approval, you must:

1. Contact your [account manager](https://dashboard.sinch.com/account/details) to purchase LINE Official Notification Messages.
2. Complete and return a template approval form, which will be provided to you.
3. Send only approved message content to the end user using Sinch's Conversation API.


![LINE Notification Message](/assets/line_notification_message_flexible.366dfe17a7da1fe6bb4f6fed30c2f4c1f0eb27ee5aecc0d037a7af7706224220.7a4a72d5.jpg)