Adding a subject line to a message makes it a lot more scannable for everyone else. To do that, first you need to expand your compose box by clicking format icon. From there, just type the subject line you want in the first line of your expanded compose box.
An error occurred while saving the commentJaneann Perkins commented
YES, Please make Subject more obvious ---- like you do in Outlook. If we type a message in Outlook, Outlook asks us before it sends, if we are sure we dont want to add a Subject. The compose box needs to be expanded automatically in both channels and in chat!! PLEASE!