The Post Storage Version accepts al the incoming mail, store a copy redundant and than forward it to the current mail system.This is realized without any current post servers configuration and without any post client configuration adjustment. These Post Storage Systems gets feed by a extra set of domain name dns records.The Post Storage Versions has of cause standard triple internal redundancy, but here also can be chosen for extra or local/building and/or global/geographical redundancy.The Post Redundancy Version filters (spam/virusses) and than stores and forwards all incoming mail (storing outgoing mail is also an option).

Each mail is stored as a seperate file on the file system. This is way the Post Storage Version is as fast as the file system. All files are indexed once and there is a special index to each email attached index file created.