Outlook Desktop App
1. Click New Email.
2. With the Message tab selected, click the red exclamation point to make the message High priority or the blue down arrow to make it Low priority.
3. Compose your message and then send it. The importance will be marked on the email itself when it sends. In your email list, you will see a red exclamation mark or a blue down arrow next to the message sender and subject, and when you open the email, you will see the importance listed below the sender's name.
Outlook Online App
1. Click New Email.
2. With the Message tab selected, click the red exclamation point to make the message High priority or the blue down arrow to make it Low priority.
3. Compose your message and then send it. The importance will be marked on the email itself when it sends. In your email list, you will see a red exclamation mark or a blue down arrow next to the message sender and subject, and when you open the email, you will see the importance listed at the top of the email.