countable nouns

*Literature* is an uncountable noun, so we can't say *one literature* or *two literatures*. But is there a countable form, as there is for *information*? *One piece of information*, for instance.

I debated with my peers that we can use the word **emails** when referring to more than one and it would be grammatically right.> But most of them said since we don't say we received **mails**... more