方法一: 使用某種顔色來标記某個發件人的郵件
Colorize your Outlook messages to identify e-mail from specific senders
[http://www.techrepublic.com/blog/microsoft-office/use-color-to-identify-mail-messages-to-and-from-specific-people/]
方法二: 建立rules,把來自某個發件人的郵件都推送至某個檔案夾下
How to Filter One Sender's Mail to a Certain Folder Automatically in Outlook
[http://email.about.com/od/outlooktips/qt/et_sender_rule.htm]