With every mail transaction, information is being added to the enterprise mail store. This information could be useful as a reference for business purposes or in possible future legal investigations. In many countries now, retaining this information has become mandatory by law. Besides this, in order to optimize the usage of the space available on the mail store, a copy of the old messages is made and stored away in an offline storage device. This ensures that the system efficiency does not degrade due to bloating of the mail store.

Each user can be mapped to one or more archive accounts. The mailboxes for the archive accounts can reside on the same server or on another server dedicated for the purposes. The basic requirement is that of additional dedicated storage (it's size depending on the number of users, mail transaction volume, and retention policies).

The archive accounts can be retained for a specified period. Messages that fall outside the specified period can either be deleted or compressed and moved to an alternate storage for longer term archival as per the business policy of the enterprise.

Mithi Connect Server offers several different configurations for archiving the messages, as explained below: