The words every administrator hates to hear: "it was always like that at my old job" came with a request from a user that when she opens Outlook, she wants several calendars open at the same time, automatically. Yes, it is possible to have Outlook open multiple windows when it loads. Open the Outlook windows
Stop accidentally sending messages in Outlook
If you're accidentally sending messages, there are a couple of ways to you can use to stop the message from being sent immediately without disabling Send Immediately. You can use a rule if you want to delay every message you send by a few minutes.
Send using Ctrl+Enter
Most of the questions I get about using Ctrl+Enter to send email are about how to turn the feature off, as many people don't like it and accidentally hit it, a user wanted to know how to show the warning dialog after telling Outlook not to show it: I turned off (permanently) the ctrl-enter to
Overcome Email Overload tip: Organize and prioritize
One of the biggest problems with email is prioritizing messages. If you deal with messages in the order that they arrived, you will probably find yourself spending too much time on unimportant messages and not enough on the important items.