How are messages sent in WhatsApp if blocked?

How are messages sent in WhatsApp if blocked - briefly?

When a user is blocked on WhatsApp, they cannot send messages to the blocker. The messages will not be delivered and will show a single checkmark (indicating that the message was sent but not received).

How are messages sent in WhatsApp if blocked - in detail?

When a user blocks another contact on WhatsApp, the process of sending and receiving messages undergoes certain modifications to ensure privacy and security for both parties involved. This mechanism is designed to protect users from unwanted communication while maintaining the overall functionality of the app.

Initially, when User A blocks User B, all messages sent by User B will not be delivered to User A's phone. The WhatsApp server acknowledges the delivery status as "Blocked" and does not forward the message to User A's device. This ensures that User A is not disturbed by any notifications or alerts from User B.

However, it is essential to note that WhatsApp does not notify User B that they have been blocked. Instead, User B will see a single tick next to their sent message, indicating that the message has been delivered to the WhatsApp server but not to the recipient's device. This is a subtle way of informing User B that there might be an issue with delivery without explicitly stating that they have been blocked.

On the other hand, if User A tries to send a message to User B after blocking them, User A will see a single tick next to their sent message as well. This indicates that the message has left User A's device but has not yet been delivered to User B's phone. Since User A is unaware of the actual delivery status due to the block, they might assume that the message was successfully sent and received.

In summary, WhatsApp employs a sophisticated system to handle blocked users. Messages from blocked contacts are intercepted by the server and not delivered to the recipient's device. This approach maintains user privacy while providing a seamless experience for both parties involved in the communication process.