|Channel||Channel type value||Text||Template||Image||Video||Button||File||Location|
|Zalo Notification Service||✅||✅||✅||❌||✅||❌||❌|
- Whatsapp requires templates to be approved before they can be sent as a business-initiated message. However, for replies to customer-initiated conversations, templates are not mandatory and freeform text is supported.
- Viber templates are only available in Russia, Ukraine, and Belarus as of September 2023
- Zalo Notification Service (ZNS) is strictly for one-way messaging and requires templates to be approved before they can be sent