Will the person know if I delete a message in WhatsApp - briefly?
If you delete a message within seven minutes of sending it on WhatsApp, the recipient will not be able to see it. However, they will see a notification that says "This message was deleted."
Will the person know if I delete a message in WhatsApp - in detail?
The question of whether a person will know if you delete a message on WhatsApp is multifaceted and depends on several factors.
Firstly, it is crucial to understand the functionality of WhatsApp's deletion feature. When you delete a message for yourself, only your version of the chat is affected; the recipient's chat remains unchanged. This means that if you delete a message you sent, the other person will still see it in their chat window unless they also delete it from their end.
However, WhatsApp offers another deletion option called "Delete for Everyone." When you use this feature, the message is removed not only from your chat but also from the recipient's chat. This action replaces the original message with a notification saying, "This message was deleted." The recipient will know that a message was sent and subsequently deleted, although they won't be able to see the content of the original message.
It is essential to note that the "Delete for Everyone" feature has a time limit. You can only delete messages for everyone within 1 hour, 8 minutes, and 16 seconds after sending. If more than this period has elapsed, the option will not be available.
Additionally, if you attempt to delete a message using the "Delete for Everyone" feature and it fails—either because the time limit has passed or due to any technical issue—the recipient will still see the original message in their chat. They might also receive a notification indicating that you tried to delete the message but failed.
In summary, whether the person knows if you delete a message on WhatsApp depends on the type of deletion used and the time frame within which it is attempted. If you use "Delete for Everyone" successfully within the allowed time, they will be notified that a message was deleted. If you only delete the message for yourself or fail to delete it within the time limit, they will still see the original message.