Systems and methods for a card-based user interface for reading thread-based communications on mobile devices

A graphical user interface on a mobile device with memory and one or more processors to execute one or more programs stored in the memory, the graphical user interface comprising:

• a list of headers representing a set of threaded conversations;
• wherein upon activation of a header corresponding to a particular threaded conversation in the set of threaded conversations, the graphical user interface transitions to:
• a first expanded card, comprising message body text associated with a most recent message in the particular threaded conversation, and
• a single collapsed card, comprising a representation of a plurality of previously read messages in the particular threaded conversation.

A client device to display threaded communications, comprising:

• a display, an input device, one or more processors, a memory coupled to the one or more processors;
• and
• one or more programs, stored in the memory, configured for execution by the one or more processors, the one or more programs comprising instructions to:
• receive data representing a set of threaded conversations in response to activation of an application, the received data including a representation header for each threaded conversation in the set of threaded conversations;
• display a list of the representation headers for the set of threaded conversations;
• simultaneously display in response to activation of a representation header corresponding to a particular threaded conversation in the set of threaded conversations, in a first expanded card, message body text associated with a most recent message in the particular threaded conversation, and in a single collapsed card, a representation of a plurality of previously read messages in the particular threaded conversation.