A computer system comprising the following: a server computing system comprising a monitoring module, a data accessing module, and an unseen count determining module; one or more processors; system memory; one or more computer-readable storage media having stored thereon computer-executable instructions that, when executed by the one or more processors, cause the computing system to perform a method for providing an indication of unseen email messages to a mobile device user, wherein the unseen email messages are those messages that are received at a user's email inbox and have not been viewed or marked as read using another email client since a time listed on a timestamp (110, 116), the method comprising the following: an act of receiving, from the mobile device user, subscription data that includes a token ID for at least one mobile device associated with the user and the timestamp (110, 116) that indicates the last time the mobile device user's email inbox was accessed, the subscription data subscribing the user to email push notifications; an act of monitoring, by the monitoring module, the user's email inbox for email messages as they are received; an act of determining, by the monitoring module, that a new email message has arrived for the user at the user's email inbox; an act of accessing, by the data accessing module, the user's email inbox to determine the number of unseen email messages; an act of determining, by the unseen count determining module, the number of unseen email messages; and an act of sending, by the unseen count determining module, a push notification to each of the user's subscribed mobile devices, the push notification providing the number of unseen email messages. a server computing system comprising a monitoring module, a data accessing module, and an unseen count determining module; one or more processors; system memory; one or more computer-readable storage media having stored thereon computer-executable instructions that, when executed by the one or more processors, cause the computing system to perform a method for providing an indication of unseen email messages to a mobile device user, wherein the unseen email messages are those messages that are received at a user's email inbox and have not been viewed or marked as read using another email client since a time listed on a timestamp (110, 116), the method comprising the following: an act of receiving, from the mobile device user, subscription data that includes a token ID for at least one mobile device associated with the user and the timestamp (110, 116) that indicates the last time the mobile device user's email inbox was accessed, the subscription data subscribing the user to email push notifications; an act of monitoring, by the monitoring module, the user's email inbox for email messages as they are received; an act of determining, by the monitoring module, that a new email message has arrived for the user at the user's email inbox; an act of accessing, by the data accessing module, the user's email inbox to determine the number of unseen email messages; an act of determining, by the unseen count determining module, the number of unseen email messages; and an act of sending, by the unseen count determining module, a push notification to each of the user's subscribed mobile devices, the push notification providing the number of unseen email messages. an act of receiving, from the mobile device user, subscription data that includes a token ID for at least one mobile device associated with the user and the timestamp (110, 116) that indicates the last time the mobile device user's email inbox was accessed, the subscription data subscribing the user to email push notifications; an act of monitoring, by the monitoring module, the user's email inbox for email messages as they are received; an act of determining, by the monitoring module, that a new email message has arrived for the user at the user's email inbox; an act of accessing, by the data accessing module, the user's email inbox to determine the number of unseen email messages; an act of determining, by the unseen count determining module, the number of unseen email messages; and an act of sending, by the unseen count determining module, a push notification to each of the user's subscribed mobile devices, the push notification providing the number of unseen email messages.