Let me ask you something: do you use hotmail? I really don’t either. However, you should know that there is an official application from Microsoft’s hotmail that has recently come to Android.
I use yahoo myself, but if you are a hotmail connoisseur, then you should know that there is a hotmail app available on Android. Without further ado, here are the features:
You get push email, which will get you “messages on your phone without delay”. Also helpful to users is the synced calendar and contacts feature, and viewing folders in hotmail, as well as sub folders.
You can even send pictures on the phone using hotmail, as well as sending receiving and viewing attachments.
If you want this, you can get it on the Android Market for free right here. It can support multiple users.