A method for presenting notifications, comprising: receiving message information from a server system, the message information representing a set of messages, wherein the set of messages may comprise a group of multiple new messages received at once; in accordance with a determination that the set of messages includes one or more unread priority messages, wherein priority messages comprise messages that satisfy predefined message importance criteria: presenting a new mail notification, including: displaying a snippet of at least one unread priority message of the one or more priority messages, wherein the snippet includes one or more portions of text in a message body of the at least one unread priority message; and in accordance with a determination that the set of messages does not include any unread priority messages: foregoing presenting a new mail notification, wherein presenting a new mail notification further comprises: determining a notification setting; conditionally, in accordance with a determination that the notification setting is enabled: presenting a new mail notification for the group of messages only whenever there are no messages received earlier that have not been reviewed by a user; conditionally, in accordance with a determination that the notification setting is disabled: presenting a new mail notification for the group of messages, regardless of whether there are new messages received earlier that have yet to be reviewed by the user. receiving message information from a server system, the message information representing a set of messages, wherein the set of messages may comprise a group of multiple new messages received at once; in accordance with a determination that the set of messages includes one or more unread priority messages, wherein priority messages comprise messages that satisfy predefined message importance criteria: presenting a new mail notification, including: displaying a snippet of at least one unread priority message of the one or more priority messages, wherein the snippet includes one or more portions of text in a message body of the at least one unread priority message; and presenting a new mail notification, including: displaying a snippet of at least one unread priority message of the one or more priority messages, wherein the snippet includes one or more portions of text in a message body of the at least one unread priority message; and in accordance with a determination that the set of messages does not include any unread priority messages: foregoing presenting a new mail notification, foregoing presenting a new mail notification, wherein presenting a new mail notification further comprises: determining a notification setting; conditionally, in accordance with a determination that the notification setting is enabled: presenting a new mail notification for the group of messages only whenever there are no messages received earlier that have not been reviewed by a user; conditionally, in accordance with a determination that the notification setting is disabled: presenting a new mail notification for the group of messages, regardless of whether there are new messages received earlier that have yet to be reviewed by the user. determining a notification setting; conditionally, in accordance with a determination that the notification setting is enabled: presenting a new mail notification for the group of messages only whenever there are no messages received earlier that have not been reviewed by a user; presenting a new mail notification for the group of messages only whenever there are no messages received earlier that have not been reviewed by a user; conditionally, in accordance with a determination that the notification setting is disabled: presenting a new mail notification for the group of messages, regardless of whether there are new messages received earlier that have yet to be reviewed by the user. presenting a new mail notification for the group of messages, regardless of whether there are new messages received earlier that have yet to be reviewed by the user.