FriendTalk is a type of message that can be initiated by businesses to KakaoTalk users based on mobile phone numbers but is sent only to users who are friends of KakaoTalk channels. The business can use this message type when they want to send personalized advertisement messages.
A FriendTalk message sent via Sinch Conversation API may include:
up to 5 call to action buttons
text up to 1,000 characters of text (Korean or English) or,
general image 720px x 720px and up to 400 characters of text in Korean or English or, wide image 800px x 600px up to 76 characters of text in Korean or English (only 1 button allowed).
The Sinch Developer Documentation site contains comprehensive documentation and tutorials, which show you how we support KakaoTalk using the Sinch Conversation API.