WhatsApp makes use of a "shop and forward" system for exchanging messages amongst two users. Whenever a consumer sends a message, it's stored over a WhatsApp server, which tries to forward it for the addressee, and consistently requests acknowledgement of receipt. 쿠팡플레이는 별도의 요금제 없이 쿠팡 와우 멤버십에 포함된 서비스예요. https://medium.com/@cureayublog/buy-herbal-medicines-online-with-cureayus-safe-remedies-1b7556fe8be8?postPublishedType=initial