To import an OLM file into MS Outlook, first convert the OLM file to PST using a reliable converter tool. OLM to Outlook converter software -Then, open Outlook, go to File  Open & Export  Import/Export, select Import from another program or file, choose Outlook Data File (.pst), browse your converted PST file, and complete the import process to access your emails, contacts, and calendar. OLM to Outlook converter software