File with an .IAF extension contains settings of an email account, in a proprietary format, specific to the older versions of Microsoft Outlook program. Currently, it can be opened – decoded with the Online IAF Decoder Web application or they can be imported in MS Outlook 2002 SE, 2003, 2007 versions.

IAF files are used in order to export email account’s settings between email management software and Microsoft Outlook calendars. Currently, there is no possibility to export account’s data into this format.