E-mail Migration Utilities  

Mimosa- NearPointMimosa - NearPoint

Mimosa NearPoint software now delivers immediate exchange email recovery and backup and fast individual mailbox restoration for all users. Additionally, NearPoint provides Exchange email archiving, email discovery, and storage management  capabilities all with a Zero foot print on your client workstations and Exchange Server.

C2C- Archive One PolicyC2C Archive One Policy Archive One is an MS Exchange archiving and capacity management solution. It can assist with the migration from one version of Exchange to another by drastically reducing the amount of time to migrate users mailboxes. Additionally, Archive One provides Exchange email archiving, PST and offline laptop archiving, (OWA) Outlook Web Access archiving and is an enterprise-wide message repository for storing and managing email. 

CommVaultCommVault - DataArchiver/DataMigrator

QiNetix - DataMigrator: Organizations need to maximize e-mail data availability and minimize storage costs. An effective data migration strategy helps reduce server loads, cuts restore times, makes the most efficient use out of new storage as it becomes available and mitigates the impact of growing Microsoft Exchange data stores and windows file systems.