PST files are the centralized database used in all the versions of MS Outlook including Outlook 2007. These personal folder files have certain predefined size limit based on the Outlook version. The earlier versions of MS Outlook such as Outlook 2002 and 2003 used ANSI character format and thus their size limit is 2 GB. The latest versions such as Outlook 2007 use Unicode character format and the size limit of PST files is thus up to 10 Gb. beyond this size limit, PST files become susceptible to corruption. It is the responsibility of the users not to overload the PST files with excessive emails and other mailbox items. The common consequences of exceeding PST size limit is slow performance of ms Outlook, longer retrieval time, longer download and upload time and problems in accessing emails. Apart the size limitation problem, PST files may also get corrupt due to other physical and logical reasons leading to lost or inaccessible emails. To avert these situations users need to repair Outlook 2007 using efficient PST repair tools. Kernel for Outlook PST repair tool is one such outstanding utility that can repair Outlook 2007 and recover users? mailbox items. With the help of this software, severe PST damage can be repaired within moments. All major errors associated with PST corruption can also be resolved. This software is equipped with superior scanning algorithms that conducts thorough search of all the mailbox items from corrupt PST files. The recovered emails are listed in a tree like structure for users to select the ones they wish to restore. Emails along with their attachments are recovered as it is. There are no alterations in their data structure, formatting and properties (to, from, cc, bcc). The repair Outlook 2007 software is highly efficient in resolving even the most severe cases of PST corruption which cannot be addressed by Microsoft?s free utilities like Scanpst.exe and pst2gb.