There are two columns in the message list that have icons instead of text in them. The first one if the attachment indicator (the heading is a little disk icon). This column will have the little disk icon (the same as the head) or it will be blank. If the icon exists, the message has an attachment. Otherwise, no attachment has been found in the message.

Attachment/security status indicator icons for incoming messages:

	A floppy disk indicates the message contains one or more attachments but that the message has not been encrypted or signed with PGP. Note: PGP signatures included in messages are classified as attachments (PGP key fingerprints are not).
	A yellow key indicates that the message has been either encrypted or signed with PGP (or both) but does not contain an attachment.
	A grey key indicates that the message has been either encrypted or signed with PGP (or both) and contains one or more attachments.
	A blank (white) area in the attachment/security status column indicates that the message does not contain an attachment nor has it been encrypted or signed with PGP.

Message status indicator icons for incoming messages:

	A yellow envelope indicates this is a new message that is unread, has a "normal" priority and has not been replied to.
	A blank (white) area in the message status column indicates this is a message that has been read, has a "normal" priority and has not been replied to.
	A red envelope indicates this is a new message that is unread, has a "high" priority and has not been replied to.
	A red dot indicates this is a message that has been read, has a "high" priority and has not been replied to.
	A turquoise envelope indicates this is a new message that is unread, has a "low" priority and has not been replied to.
	A blue dot indicates this is a message that has been read, has a "low" priority and has not been replied to.
	A blue curved arrow indicates this is a message that has been replied to.

Message status indicator icons for outgoing messages:

	A torn white envelope indicates that this is a message you are in the process of composing and have saved to the Drafts folder. This message has not been sent. If you move the message from the Drafts folder to another folder or delete the message, the torn envelope icon will remain.
	A whole white envelope indicates this is a message that you have composed and either queued for sending or successfully sent.