The OutlookZIP is an Add-On for Microsoft Outlook. It makes easy for you to compress the files that you attach to Microsoft Outlook e-mail messages. OutlookZIP integrate directly to Outlook toolbar making the usage simple easy. OutlookZIP works only with Outlook 2000 and newer versions. It does not work with Outlook Express. The created ZIP files can be open by a standard ZIP programs, such as Winzip. OutlookZIP has also the possibility to protect ZIP files with password. OutlookZIP have also the possibility to unblock same files types witch are by default blocked by Outlook.