The software is a mainstay for many businesses running and control their own email servers. This version of the software with the name Exchange Serve 2016 is supposed to simplify the architecture while still adding more features and play nice with other Office products.
Users can use links from Sharepoint 2016 and OneDrive for Business as email attachments, instead of having to upload the actual file which means better file sharing and editing.
The Outlook web app has been greatly improved, with new features, such as new themes and emojis, inline replies, better HTML rendering and more.
Search has been improved to make it both faster and more intelligent. You can also search across the many Microsoft services you use beyond email, such as People and Calendar.
There are add-ins to allow developers to add their own custom elements to the UI or code their own solutions on top of the functionality provided by Outlook.
Vole is adopting an update model similar to the way it now handles Windows. In otherwords cumulative updates featuring bug fixes and improvements to the core service will be released every three months.
Microsoft provides a 180 days trial for free.