Signature - Instead of typing your name on the bottom of each e-mail that is sent, you can automatically have information such as your name, title, address and phone appear at the bottom of each e-mail message. While a signature usually consists of name and contact information, it can also include a picture or can be customized to include other information.
Distribution Lists - If you send e-mail to groups of people at one time, a distribution list easy way to accomplish that. For example, if you frequently send messages to a group of people on a marketing team, you can create a distribution list called Marketing and include the e-mail addresses of all the people on the team. A message sent to the marketing distribution list goes to everyone on the list.
Free/Busy Information -When using Outlook calendars, if your company is set up for automatically sharing information, you can allow others to see your schedule (such as if you are busy, free, tentative, or out of the office) and view coworkers schedule's if they are on a shared server.
Respond to Meeting Request - If you are invited to a meeting by someone, you would receive an invitation in your e-mail inbox. You can reply to a meeting invitation in one of four ways: Accept, Tentative, Propose New Time, and Decline (buttons appear in the e-mail). Outlook notifies the meeting organizer of your response, and automatically places an item in your calendar for the meeting.
Assign Tasks - A task is a personal or work related activity that you want to track to completion. You can assign tasks to someone else in the form of a task request, which is a task sent in an e-mail message asking the recipient to complete the activity. If the recipient accepts the task, it is added to his/her To-Do List, and he/she becomes the owner of the task. When an accepted task is changed or completed, Outlook automatically sends an update to the person who made the task request.