This free utility allows you to save contacts and email addresses from Outlook address books to Auto-Complete cache files in NK2 or XML format. Many global and LDAP address books recognize selected addresses slowly, so creating Auto-Complete Lists for slow address books in advance saves a lot of time. Auto-Complete Lists have a limit on the number of items. You can change this value in the registry, but usually, it is 1000 entries. One way to build your Auto-Complete List quickly is to export it from the Outlook address book.