Everyone was going on about Gmail's autosave while I was saying what a good feature "Save Draft" is. And there's me thinking, I don't see that feature. Is Google punishing me for some unknown crime? As it turns out, the answer is yes! At some point in the past I'd switched my display language to "English (UK)". This means that it spells a few words correctly, says "Deleted Items" instead of "Trash", and disables most of the newest features. Woo. Back to "English (US)" for me.