You can forward any email from Karbon, just like you would from another email client.
You can forward a specific email within the email conversation, or you can forward the entire conversation by choosing the icon next to your reply.
If you forward an email, it will automatically be split into a new conversation.
When you do this, an activity event inside the email conversation will let you know this has occurred. You will be able to click the link from this activity, which will open the new email conversation in a new browser tab.
Best Practice TIp: instead of forwarding an email to your colleague, have you tried adding a comment? By adding a comment, you can ensure that the conversation you are having internally will remain internal.