What I like most from Google’s GMail is its feature, conversation. A message, along with all the replies to that message (and replies to the replies). Sometimes these are also called ‘threads.’ By organizing your mailbox in threads, it’s easier to understand the context of a message, so it’s easier to follow the ‘conversation.’ Now I can have a preview of GMail conversation by installing a GreaseMonkey file. Afer installing the file, right click the conversation and you can preview it. Nice, right?
Have a try!