How can I forward in a new private conversation?
If you use Forward In this conversation, your forwarded email will appear in the original Missive conversation (thread) of the email you are forwarding. Similarly, if someone replies to the forwarded email, their reply will appear in the original conversation.
On the other hand, Forward In private conversation creates a fresh new conversation with only the forwarded email. Reply will go to this new conversation instead of the original one. This can be useful if you want your forwarded email to fork off a new conversation that isn’t linked to the whole original thread.