Locking an individual WhatsApp message On my SMS messaging app (Go SMS Pro)I can lock individual messages within a thread/conversation so that if I want to delete the majority of my messages from a sender I can still save important ones and prevent them from being deleted. With WhatsApp it seems I can only delete an entire message thread and there is no way of saving individual messages within a thread. Is this correct or have I missed something? 
Many thanks
This is correct
There is no way currently to lock individual messages to prevent them from being deleted according to WhatsApp Support.
You can, however, select several messages to be exported:

Click on Options &gt; Settings &gt; Chat History &gt; Send chat history.

You will then be able to send your chat history via email or through some other application.