Hi there, If I take example imap.hs import System.IO import Network.HaskellNet.IMAP import Text.Mime import qualified Data.ByteString.Char8 as BS import Control.Monad -- the next lines were changed to fit to my local imap server imapServer = "imap.mail.org" user = "" pass = "" main = do con <- connectIMAP imapServer login con user pass mboxes <- list con mapM print mboxes select con "INBOX" msgs <- search con [ALLs] mapM_ (\x -> print x) (take 4 msgs) forM_ (take 4msgs) (\x -> fetch con x >>= print) and change the last line (in order to print all messages of the mailbox) into: forM_ msgs (\x -> fetch con x >>= print) I get Stack space overflow: current size 8388608 bytes. Use `+RTS -Ksize -RTS' to increase it. Is this something to be fixed in the HaskellNet code, or in the example code? -- Manfred