Whenever you enter an email address in the to, cc or bcc fields of Microsoft Outlook they get automatically added to the autocomplete list of the email software if the email is send. This autocomplete list grows over time and will contain not only valid email addresses but also those that are no longer working and those with typos.
The Microsoft Outlook mail autocomplete manager NK2View by Nirsoft is a portable software for the Windows operating system that provides the means to view, delete and edit all email addresses that are stored in Outlook’s autocomplete database. The software program can be used to load a valid Microsoft Outlook n2k file after startup.
It displays the information in the usual table layout that is known from many other Nirsoft applications like the one that can be used to display and save email attachments in Outlook. Columns that are displayed are the display name of the user, the email, the autocomplete value, the protocol, the recipients field and the cryptic entry id and index parameters. They can be sorted for easier access to the information.

The Outlook tool provides the means to backup and restore n2k files. Creating a backup before processing the file is recommended as it is the only way of ensuring that the file can be restored if something goes wrong during the editing process.
The usual options to export information into various formats such as xml, txt, html or csv are provided in the interface. Another interesting option is the ability to add entries from an Outlook address book into the autocomplete file.
Several command line parameters are available that can be used to execute the Microsoft Outlook autocomplete manager without using the graphical user interface.
Enjoyed the article?: Then sign-up for our free newsletter or RSS feed to kick off your day with the latest technology news and tips, or share the article with your friends and contacts on Facebook or Twitter.Related Articles:
Edit Microsoft Outlook Autocomplete ListMicrosoft Outlook Mail Statistics
Microsoft Outlook Mail Time Zone Plugin
Microsoft Outlook: Display And Save Email Attachments
Microsoft Outlook Mail Attachment Recovery

This is a FREE Outlook NK2 auto complete cache rebuild tool. Its easy to use and very slick.
http://www.outlooktip.com/install-outlook-nk2-autocache/