Originally Posted by guinda35
I am not satisfied with everything on the 10, such as ... not even being able to save draft emails.
OK, there's no explicit option for it, but...
While typing an email, hit cancel
A prompt will pop up, saying "Changes made! Discard unsaved changes?"
Options are Cancel, Discard, Save
Save will save as a draft. Shows up with a green "draft" icon in hub.