1)   PSTCompactor - Professional Edition 2.5.4
Reduces Microsoft Outlook PST file sizes up 38% across the Corporate network. Compress & zip attachments, automate compaction, etc. Suitable for management and implementation of Enterprise Email Policies. No Exchange changes or dependancy
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 2)   E-Rkive 2.1
Archive e-mail with E-Rkive. The program interfaces with Microsoft Outlook, allowing you to archive, restore, search, filter and compress e-mail.
email archiving, email management, email archive, outlook, pst file management,

 3)   PSTCompactor - Home Edition 2.5.4
Shrink Microsoft Outlook email PST files up to 38% and avoid the 2gb limit - don't let Outlook corrupt your email. Zip attachments, force compaction, removing deleted content and more! Makes Outlook faster, more reliable and less prone to corruption
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 4)   PSTCompactor - Enterprise Edition 2.5.4
Enforce corporate Email Policies on Outlook PST files and comply with audit / content retrieval requirements. Powerful reporting, archiving and content management capabilities plus compress old email, zip attachments, force PST file compaction etc
pst file management, pst, file, content, ilm, information, lifecycle, search, recovery, policy,