Every email account consists of multiple folders, as shown in Figure 33-1:
Figure 33-1. The folder structure of a typical email account
Inbox Contains new messages
Drafts Contains outgoing messages until you're ready to send them
Sent Mail Contains copies of messages you've sent
Trash Contains deleted messages that you can still read and retrieve if necessary, until you empty your trash
To read individual messages, you need to choose the email account, the folder, and the specific message that you want to read.
Since you can set up multiple email accounts on your iPhone, you may need to choose which email account ...