Microsoft Office Outlook 2016: Part 2 (Advanced) - When you need to send a message on a specific day and time, you can configure Outlook's delivery options to send the message automatically. And any message you send can be assigned a priority level or sensitivity level to alert the recipient about a message's importance or the sensitivity of its content. (Importance Levels, Sensitivity Levels, Delivery Options (Delay delivery, Send Replies To, Mail Expiration))