While handy for backing up or transferring your Outlook for Mac data to another Outlook for Mac installation, this format isn’t compatible with third party apps such as Apple Contacts. But this method results in the creation of an.olm file, a for the macOS version of Outlook.
and offers to package it all up neatly for you. This process lets you select the type of information you wish to export - mail, calendars, contacts, etc. Don’t Use Outlook’s “Export” Feature First, for those who have long used Outlook, you may be familiar with the app’s “Export” feature, located at File > Export in the menu bar.
Outlook has the ability to export contacts in a format that works with other apps, but the process may not be obvious. If you have your contacts currently stored in and you wish to switch to another app - such as the macOS app - or use another app alongside Outlook, you don’t need to manually re-enter your contacts’ information.
