[Haskell-cafe] what is the status of haskell's mail libraries?

Hi all, I was just looking for mail libraries on hackage. You know libraries where I can construct an email, or retrieve on from the server. With retrieving an email I mean something with a bit more structure than a String, or, God help me, a ByteString. Where are we on this subject? I really cannot tell from the first glance. Günther