Icons next to a message in Microsoft Outlook Express can signify certain characteristics of that message, such as whether it has an attachment, was sent with a high priority, or has yet to be viewed. The following table describes the most common icons and what they mean.

Icon	Description
	The message has at least one attachment.
	The sender has marked the message as high priority.
	The sender has marked the message as low priority.
	The message has been viewed.
	The message has not been viewed.
	The message has been replied to.
	The message has been forwarded.
	The message is a draft and stored in the Drafts folder.
	The message is flagged for follow-up.
	The message is digitally signed and has been viewed.
	The message is digitally signed and has not been viewed.
	The message is encrypted and has been viewed.
	The message is encrypted and has not been viewed.