How do I reply to a message in Conversations?
Canvas makes it easy to reply to messages from other users in your Conversations Inbox.
If you want to reply to a submission comment, you can to reply using submission comments in your Inbox or directly from your assignment or quiz.
Click the Conversation you want to respond to . Hover over the timestamp and click the Reply icon  within the message or the Reply icon in the toolbar .
Note: If there is more than one recipient, you can reply-all to the conversation and everyone included will see your reply.
Reply to Message
View Sent Message
Your message appears in the preview text of the conversation  and at the top of the individual thread .