Show AllThe feature described in this Help topic is only available if support for a right-to-left language is enabled through Microsoft Office Language Settings. To enable right-to-left features, you must be running a Microsoft Windows operating system that has right-to-left support.
Outlook provides several options that are used specifically for searching for strings of text containing right-to-left or bidirectional text in either paragraph direction.
When conducting a standard search, you can select check boxes to search for text with matching kashidas (Arabic only), alef hamza (Arabic only), or diacritics.