The *.contact file format is based on XML markup and consists of many specific tags that allow to store both text and graphic data such as a photo of a contact person. Follow our guide to import contacts into Outlook. It supports contact grouping by creating contact groups. The Windows Contacts application supports working with CSV, WAB, VCF, LDIF contacts files as well as XML files with the. Initially, Microsoft Windows used the WAB application (Windows Address Book) to store the contact information, later it was replaced with the Windows Contacts app interface, which has its own API and allows software developers to integrate contacts into various Windows applications. Data Extraction Kit for Outlook License.IncrediMail to Outlook Transfer License.Thunderbird to Outlook Transfer License.Download Data Extraction Kit for Outlook.