By default, all software supports multiple file extensions. Microsoft Outlook supports at least 26 different file extensions. The basic files that Microsoft Outlook supports are .CSV. However, not all of the extensions listed on the list are always used to save the effects of work in Microsoft Outlook. Very often, files with such extensions are used as source data files used by Microsoft Outlook.
Microsoft Outlook can be used to convert file formats between the file extensions listed below. You can open a file with one of the file extensions below via Microsoft Outlook and try to save it in another file format, also supported by Microsoft Outlook.