Something that we've learned about Google is that things can change - sometimes overnight and without warning. However, the "New Compose" window for sending email has been around for a while and you may have reverted back to the classic way of composing messages (I have) to avoid the change. Click here to find out why the New Compose experience is faster, cleaner and more powerful. Included in that site is a short video that explains the features of New Compose. Eventually the old way will go away so I will be learning my way around New Compose....which isn't that complicated; it's just different.