They "catch" the message the moment it arrives and save a copy in their own database.
To view messages that a sender has deleted on WhatsApp, you generally have to rely on logs that captured the message before it was removed. While WhatsApp does not have an official "undelete" feature, several workarounds exist depending on your device. 📱 Android Methods whatsdelete-view-deleted-messages
Ensure you have a backup that was created after the message arrived but before it was deleted. They "catch" the message the moment it arrives
Uninstall WhatsApp and reinstall it from the App Store . whatsdelete-view-deleted-messages
If you haven't cleared your notifications yet, you might still see the snippet of the deleted message in your pull-down Notification Center. 💻 WhatsApp Web & Desktop