1) login
2) top right, press link: "My messages"
3) top left, hover mouse over "messages". A popup menu appears
4) from popup menu select item "Send Items" and press mouse button.
5) an overview list page of (15) send items will appear, as well as the contents of the send messages (separated per message/topic) that belong to the current overview list page.
6) at the bottom of the overview list page you can select a page-link to switch to another overview page (to quickly navigate between pages/message contents).
Hope it helps.