ZipWORX Outlook Companion - Version 2.1 Using ZipWORX Outlook Companion v2.1 when sending email attachments with Outlook allows users to compress their email attachments, minimize bandwidth, encrypt and secure their transfer The intended audience for ZipWORX Outlook Companion v2.1 are users of Microsoft Outlook 2000/XP/2003 that are in need of software to increase their Email Security level and also to minimize their Bandwidth needs by reducing redundant information