From: and Reply-to fields in message compose

In most email clients, you can tell it what should be the From: and Reply-To: fields when you compose an email, and set those as defaults.  This is very useful because many SMTP servers use some server-defined default that is not very readable (eg. lastname, first name, middle name).  My android email clients do this, but not EM Client.  Please tell me if I missed something.  Thanks.