Outlook.com - in stages of its life also known as Live.com and Hotmail.com - is Microsoft's free webmail service. It competes against Yahoo, Gmail and similar services.
While Outlook has been dependable and easy to use, Microsoft wants it to stand out. Recent visual upgrades have helped make it nicer to look at and easier to use, but Microsoft has grander goals.
That's why Outlook.com now has something called Advanced Rules. In most mail programs and services, you can set up rules so emails from certain people go to certain folders or get flagged as important.
Outlook's rules let you get much more specific. Here's one of Microsoft's examples of an Advanced Rule:
If an unread email is older than 3 days and is from one of your contacts, mark it as important and flag it.
That kind of setup could come in handy if your email inbox is regularly overflowing.
Even better, the system for creating rules doesn't look all that complicated.
In addition to Advanced Rules, Microsoft is also including a better Undo feature, in-line replies for conversation threads and a better chat system.