I heard about not bad application-pst-viewer, all of your contacts, mails, messages, tasks and calendars are stored on mail server and there's no way to extract it offline,will help you to restore your data from files with *.pst and *.ost extension,tool will work under all supported versions of Microsoft Windows operating system, as well as with Microsoft Outlook,pst viewer can retrieve all contents as a number of files in *.vcf, *.txt and *.eml formats,converting of recovered data into a *.pst file, that can be opened by any mail client or viewer .pst file, compatible with Microsoft Outlook, file size will not exceed 1Gb.