The Open Out Mailbox button opens the Out mailbox. All messages you compose, save, and queue are stored in this mailbox until they are sent. The Check Mail button retrieves new messages. The New Message button opens a new message composition window. The Reply button generates a reply message to a current incoming message.
All button generates a reply message addressed to all of the recipients of the selected message.
The Forward button generates a forward message from a current incoming message. The Redirect button generates a redirect message from a current incoming message. The Open Previous Message button opens the previous message in the mailbox. The Open Next Message button opens the next message in the mailbox. The Attach File button displays a standard file dialog so that you can attach any file to a new or current message.