Foxmail has a strong message lookup function, it can find in a mailbox to contain the user specified information of all messages, or in a message to find the specified text.
Select the appropriate mailbox, and then execute the Find Mail command on the Edit menu. Open the Find Mail dialog box, enter the characters you want to find in the Find column, and decide whether you want to select the Find headers only and the match English case option, and then click the Find Next button. Foxmail will find all messages in the mailbox that contain the user-specified text one at a time.
In addition, when you select a message to perform the find text command on the Edit menu, open the Find Text dialog box, and then enter the text you want to find, you can find the exact location of the specified text in a longer message.