Check Historical Edits and Deletions of Messages
Rocket.Chat lets you view any message history, including modified or removed messages.
To update message history settings,
Navigate to Administration > Workspace > Settings > Message.
Enable Allow Message Editing and Keep Per Message Editing History to see a history of all messages and not only the last edit made.
Disable Allow Message Deleting. Otherwise, messages show only the deleted status, and you cannot see the complete message history.