Presenting e-mail on a touch device

A method, comprising:

• at an electronic device with a display:
• concurrently displaying, on the display, a first pane and a second pane, wherein the first pane includes a plurality of items including a first item that represents a first plurality of messages and a second item that represents a second plurality of messages;
• detecting selection of the first item of the plurality of items;
• in response to detecting selection of the first item, displaying representations of two or more of the first plurality of messages represented by the first item in the second pane while maintaining display of the plurality of items in the first pane;
• detecting a user input associated with the first item of the plurality of items in the first pane;
• in response to detecting the user input associated with the first item of the plurality of items, displaying a plurality of sub-items in the first pane, the plurality of sub-items corresponding to a respective set of one or more messages of the first item;
• while concurrently displaying the plurality of items in the first pane and the representations of the two or more of the first plurality of messages represented by the first item in the second pane, detecting selection of the second item of the plurality of items;
• and
• in response to detecting selection of the second item, replacing display of the representations of the two or more of the first plurality of messages represented by the first item with display of representations of two or more of the second plurality of messages represented by the second item while maintaining display of the plurality of items in the first pane.

An electronic device, comprising:

• a display;
• a memory;
• one or more processors coupled to the display and the memory, the memory including instructions executable by the one or more processors for:
• concurrently displaying, on the display, a first pane and a second pane, wherein the first pane includes a plurality of items including a first item that represents a first plurality of messages and a second item that represents a second plurality of messages;
• detecting selection of the first item of the plurality of items;
• in response to detecting selection of the first item, displaying representations of two or more of the first plurality of messages represented by the first item in the second pane while maintaining display of the plurality of items in the first pane;
• detecting a user input associated with the first item of the plurality of items in the first pane;
• in response to detecting the user input associated with the first item of the plurality of items, displaying a plurality of sub-items in the first pane, the plurality of sub-items corresponding to a respective set of one or more messages of the first item;
• while concurrently displaying the plurality of items in the first pane and the representations of the two or more of the first plurality of messages represented by the first item in the second pane, detecting selection of the second item of the plurality of items;
• and
• in response to detecting selection of the second item, replacing display of the representations of the two or more of the first plurality of messages represented by the first item with display of representations of two or more of the second plurality of messages represented by the second item while maintaining display of the plurality of items in the first pane.