It is important to spell check all e-mails before you send them. You want to make sure simple typos and frequently misspelled words are discovered and corrected before sending an email. In Outlook 2013 any misspelled words will be underlined but it will NOT stop you from sending the e-mail with spelling mistakes.
The default setting in Outlook is to return to the inbox after you handle an e-mail (i.e. move it to a folder or delete). You can change the settings to make it easier to get through all the items in your inbox and make you more efficient.
You can add the 'Due Date' column to any of your e-mail folders to help you keep track of important tasks and deadlines.
In order to prioritize e-mails in your “Actions to Complete” folder, you can add a column, insert a priority number for each e-mail, and then sort the folder by priority.
If you need to set up a meeting with others, it is beneficial if you can give them an overview of your availability. It's easily done in an e-mail message in Outlook 2013.