Too much Ambigous Compose Screen

Too much Ambigous Compose Screen

Can someone address this issue? I see a Reply To textbox in the Compose screen and very many times, we may forget to fill the To field and hit Send. Can some DHTML Trick be used to hide this field and show it on demand only or the Reply To should be phrased as Reply-to.

The capitalized separate words Reply To might be a bone of contention and source of confusion for many.