How do I reply to a message in a discussion thread or reply by email in the new V5 desktop version?

1. Enter a keyword in "Search Topic Name" on the left, then select the discussion thread you want to reply to. 2. Enter your message in "Enter Message" at the bottom. To attach a file, click the paperclip icon to the right of the input field. 3. To reply by email, click "Reply by Email". To specify recipients, click "Send to…". 4. Check the content and recipients, then click "Send".