A method implemented by an electronic device, the method comprising: displaying, on a display screen, a view comprising a plurality of communication event listings, each communication event listing corresponding to a communication event, a subset of more than one of the communication event listings each comprising a user interface element for initiating a reply action for its corresponding communication event; detecting selection of a reply action for a first communication event listing in the subset; in response to the selection, displaying a first message input field overlaying at least a portion of the view; receiving input message content in the first message input field; initiating transmission of the input message content in a first reply message for the communication event corresponding to the selected reply action; after initiating transmission of the message content, detecting further selection of a reply action for a second communication event listing in the subset; in response to the selection, displaying a second message input field overlaying the view; receiving input message content in the second message input field; and initiating transmission of the input message content in a second reply message for a communication event corresponding to the further selected reply action, wherein the first one and the second one of the subset of displayed listings correspond to communication events of different communication event types comprising IM and SMS, and wherein the view is generated and displayed by a unified event application (167, 260) executing on the electronic device, and wherein displaying the first message input field comprises: the unified event application (167, 260), in response to the selection, requesting invocation of a dedicated application (161, 162, 163, 221, 222, 223) associated with the communication event corresponding to the selected reply action; and the dedicated application (161, 162, 163, 221, 222, 223) generating the first message input field for display on the display screen; and wherein initiating transmission of the input message content in the first reply message comprises the dedicated application (161, 162, 163, 221, 222, 223) receiving the input message content and generating the first reply message; wherein the first one and the second one of the subset of displayed listings correspond to communication events of different accounts. displaying, on a display screen, a view comprising a plurality of communication event listings, each communication event listing corresponding to a communication event, a subset of more than one of the communication event listings each comprising a user interface element for initiating a reply action for its corresponding communication event; detecting selection of a reply action for a first communication event listing in the subset; in response to the selection, displaying a first message input field overlaying at least a portion of the view; receiving input message content in the first message input field; initiating transmission of the input message content in a first reply message for the communication event corresponding to the selected reply action; after initiating transmission of the message content, detecting further selection of a reply action for a second communication event listing in the subset; in response to the selection, displaying a second message input field overlaying the view; receiving input message content in the second message input field; and initiating transmission of the input message content in a second reply message for a communication event corresponding to the further selected reply action, wherein the first one and the second one of the subset of displayed listings correspond to communication events of different communication event types comprising IM and SMS, and wherein the view is generated and displayed by a unified event application (167, 260) executing on the electronic device, and wherein displaying the first message input field comprises: the unified event application (167, 260), in response to the selection, requesting invocation of a dedicated application (161, 162, 163, 221, 222, 223) associated with the communication event corresponding to the selected reply action; and the dedicated application (161, 162, 163, 221, 222, 223) generating the first message input field for display on the display screen; and wherein initiating transmission of the input message content in the first reply message comprises the dedicated application (161, 162, 163, 221, 222, 223) receiving the input message content and generating the first reply message; the unified event application (167, 260), in response to the selection, requesting invocation of a dedicated application (161, 162, 163, 221, 222, 223) associated with the communication event corresponding to the selected reply action; and the dedicated application (161, 162, 163, 221, 222, 223) generating the first message input field for display on the display screen; and wherein initiating transmission of the input message content in the first reply message comprises the dedicated application (161, 162, 163, 221, 222, 223) receiving the input message content and generating the first reply message;