該OLK14MAIL文件擴展名被稱為是由微軟開發的Outlook郵件帳戶文件。它是存儲電子郵件帳戶設置,包括連接和登錄信息的文件格式。它用於存儲帳戶的詳細資料,讓用戶能夠下載電子郵件和同步日曆。它會自動在下面的目錄中在Mac OS X中保存:[用戶] /文件/ Microsoft使用者資料/ Office 2011的標識/主標識/數據記錄/郵件帳戶/。 Mac的Outlook管理與Exchange,IMAP和POP電子郵件帳戶,以及日曆,通訊錄,待辦事項列表。它能夠自動識別和配置電子郵件帳戶的能力。它可以自動設置許多流行的互聯網服務供應商和電子郵件服務提供商如AOL,Gmail時,MobileMe的,的Windows Live Hotmail和雅虎帳戶。它還具有一個統一的收件箱顯示所有可能有帳戶的郵件,以及會話視圖顯示了相關的消息。然而,它並不自動完成電子郵件地址和主題就知道了。在OLK14MAIL格式的文件可以在Mac OS平台打開與Microsoft Outlook 2011。
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.
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 In Windows Vista, Outlook Express was outdated by Windows Mail, then again by Windows Live Mail as separate software in Windows 7.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.