The situation seems to be getting  better for the 5800 XpressMusic and S60 5th edition. While we are still waiting for an official Live Messenger client that also install the Hotmail program in Messaging, Microsoft has released world wide POP3 access, allowing you to use

the built- in email program. Things are also looking good when it comes to Nokia Messaging. Symbian-Addict has received news that Nokia Messaging is for 5800 XpressMusic and upcoming 5th edtion devices is on the way. An interesting piece of news is that the 5th version is said to be using a touch-and-hold gesture, but sadly HTML still has not been implemented in what is still a BETA version. I’m sure a lot will be fixed and added before the final release. More info can be found here.