WhatsApp Makes use of a "store and ahead" system for exchanging messages concerning two people. Any time a person sends a message, it is stored on a WhatsApp server, which tries to forward it towards the addressee, and regularly requests acknowledgement of receipt. The ask for is then logged within https://herbalsupplement.hashnode.dev/safe-herbal-supplements-for-daily-use-buy-from-cureayu?showSharer=true