If you unblock someone in WhatsApp, will they know - briefly?
No, if you unblock someone on WhatsApp, they will not be notified. The other person will only see your messages once they are sent after you have unblocked them.
If you unblock someone in WhatsApp, will they know - in detail?
When you decide to unblock a contact on WhatsApp, it is natural to wonder whether the person will be notified of this action. The short answer is no; WhatsApp does not send any notification or alert to the user when they are unblocked. However, there are certain circumstances under which the individual might infer that they have been unblocked.
For instance, if you try to send a message to someone who has blocked you, it will fail to deliver and there will be no checkmarks next to the message in your chat window. Once you unblock them, future messages will be successfully delivered, which could indicate to the other person that they have been unblocked, especially if you initiate contact immediately after unblocking.
Moreover, if the individual tries to view your profile information such as your status or last seen timestamp and it was previously unavailable due to being blocked, the sudden availability of this information could also serve as an indirect indication that they have been unblocked.
In summary, while WhatsApp does not explicitly notify users when they are unblocked, certain changes in message delivery statuses and profile visibility can provide clues to the other person. Therefore, if you wish to keep the action of unblocking private, it is advisable to wait before attempting to re-establish contact or allow some time before checking your profile information.