Kaspersky Hosted Email Security service does not have any restrictions to the size of the processed traffic. Policies can be defined within the service to quarantine the mail at the internet level or immediately delete them if they exceed a specified size. This approach can be applied to specific users or user groups. A typical policy example would be where marketing need to receive PowerPoint Files above 25mb in size, but sales do not. Any mail quarantined can be released as required through the portal.