What is he sent a message but deleted it?

When someone sends a message and then deletes it, the specifics of how this is handled and what it means can vary depending on the platform being used. Here are some general points on the matter:

1. Notification: Many messaging apps provide a notification that a message was deleted. For example, in platforms like WhatsApp or Facebook Messenger, the recipient might see a note saying that a message was deleted, but they won't see the original content of the message.

2. Time Frame: Different applications have different time frames within which a sender can delete a message after it is sent. Some apps allow deletion within a few minutes, while others may extend this to an hour or more.

3. Visibility: On some platforms, both parties in the chat can see that a message was deleted. However, they won't typically be able to see what the original message said unless they saw it before it was deleted.

4. Possibility of Recovery: In most apps, once a message is deleted from the chat, it's not typically recoverable through the app itself. However, there might be third-party applications or methods for recovering deleted messages, depending on the app and device used.

5. Intentions and Miscommunications: A deleted message can sometimes lead to curiosity or assumptions about the sender's intentions. The sender might have deleted the message due to a typo, reconsideration of their words, or deciding that the message was unnecessary.

6. Platform Differences: The procedure and policies around message deletion can vary significantly between platforms. For example, in some professional communication tools like Slack, the history of message edits and deletions might be visible to administrators.

Understanding these points can help when navigating situations involving deleted messages, especially if communication seems unclear or if you're curious as to why a message might have been retracted.