One email that you can reach from everywhere
If you want your inbox to be updated fast always try to use the web version. Moreover, comparing to the desktop version the web version of the application has better interface and better appearance. And it works faster than the desktop one..
Pros
Having application on all the platforms makes this tool accessible from everywhere. It is very useful to communicate with your colleagues, because you can find people with their name and surname. The calendar also very helpful for organizing the meetings and events and you can easily create an event and invite people and with one click you can attend or dismiss. Then in the calendar view you can see upcoming events. As it is implemented with skype it is very easy to switch between applications and call the person from outlook and etc.
Cons
When opening the pc the loading of the mail takes much time and you need to wait at least 5 mins to be updated. However, the if you use the web version, you can easily see the updates. Moreover, sending the mails from the pc version is also takes time and it does not go immediately when you click the send. The desktop version of the application has a poor appearance and also it looks so complicated with lots of button and features.