The Quick Access Toolbar is a customizable toolbar located at the top left corner of Microsoft Outlook 2013. You can select the commands you use the most to add to this toolbar. It is a great time saving tool!
If you find that there are e-mail messages that you send out frequently that contain similar text, you can create a reusable template in Outlook.
When you open an image that someone sends in an e-mail, it opens in the "Photos" app in Windows 8. This app is limited in what you can do with the image after opening. You can change the default program that opens images so that it is Windows Photo Viewer (the photo viewer that was used in Windows 7, Vista, and XP). This will allow you to work with images as soon as you open them, no matter how you open them.
If you use categories in your Contacts folder, you can quickly send an e-mail to an entire category group. This can be quicker than creating a Distribution List/Contact Group.
You can save blocks of text that you use often when composing e-mail messages. Using "Quick Parts" can help you save time and be more efficient.