A computer receives an out of office status a user has indicated on an email application, the email application using a communications network and determines a quota status of the user based on a previous quota usage pattern and a current quota usage pattern, wherein the quota includes an amount of storage spaced allotted to the user. The computer receives a new email to be delivered to the user and assigns a quota status to the new email. In response to the assigned quota status, the computer determines when the new email should be delivered to the email application of the user. As soon as the sender enters the name(s) of the recipients, the quota usage monitoring engine retrieves the quota status information from the recipients mail box. The engine determines if the new email should be sent out from the senders outbox and dropped to recipients mail box.