When you start exmh, it automatically moves all new mail from the server into your inbox.
New messages appear in blue text.
You can see that exmh makes it easy to figure out where mail came from and what it's about by looking at the sample window above. To read a message, select it in the middle panel by clicking on it with the mouse. The message you are reading will be colored red. The text of the selected message will be shown in the bottom panel. Use the scroll bar on the right side of the panel to move the text up and down as needed to read the message.