該.PAB文件擴展名是用於微軟電子郵件程序創建的文件。文件具有.PAB擴展被稱為地址簿文件,因為它們被用於由這些電子郵件程序,允許來自不同發件人和不同受者的發送和接收電子郵件。這些文件被稱為地址簿文件,因為它們包含的信息是關於該用戶的聯繫人的個人信息以及包括電子郵件地址,名稱和這些觸點通過其中所有信息從電子郵件分開保存其他聯繫信息用戶發送和接收。他們更可以創建和存儲電子郵件的目的,而不是聯繫人信息走過來的電子郵件的地址簿文件。使用此文件擴展名是最常見的電子郵件程序是Microsoft Outlook和Microsoft Outlook Express和他們是微軟的Office的兩個方案。這兩個Microsoft Office程序也可以用來打開這些.PAB文件。
Outlook Express is an email and news client that is integrated with Internet Explorer versions 4.0 through 6.0. It is also bundled with a number of versions of Microsoft Windows, from Windows 98 to Windows Server 2003, and is available for Windows 3.x, Windows NT 3.51, Windows 95 and Mac OS 9. In Windows Vista, Outlook Express was outdated by Windows Mail, then again by Windows Live Mail as separate software in Windows 7. Microsoft Entourage, sold as part of Microsoft Office for Macintosh, has changed the Macintosh version. Outlook Express is a diverse application from Microsoft Office Outlook. The two programs do not share a common codebase, but do share a common architectural philosophy. The similar names lead many people to incorrectly conclusion that Outlook Express is a stripped-down version of Microsoft Office Outlook. Outlook Express utilizes the Windows Address Book to store contact information and incorporates tightly with it. On Windows XP, it also joins together with Windows Messenger.
Microsoft Outlook is available as a part of the Microsoft Office suite, and a personal information manager from Microsoft. The present version is Microsoft Office Outlook 2010 for Windows and Microsoft Office Outlook 2011 for Mac. Although frequently used primarily as an email application, it also includes a calendar, task manager, contact manager, note taking, a journal and Web browsing. It can be utilized as a stand-alone application, or can work with Microsoft Exchange Server and Microsoft SharePoint Server for many users in an organization, such as shared mailboxes and calendars, exchange public folders, SharePoint lists and meeting schedules. There are third-party add-on applications that integrate Outlook with electronic devices such as BlackBerry mobile phones and with other software like Office & Skype Internet communication. Developers can also make their own conventional software that works with Outlook and Office components using Microsoft Visual Studio. Moreover, Windows Mobile devices can synchronize almost all Outlook data to Outlook Mobile.