Migration Assistant copies all of your files from your old Mac to your new Mac so that you don't have to copy them manually.
This also works if you right-click or CTRL-click on the file, select Open With and select TextEdit. Install Windows on your Mac. This is the most complicated and time-consuming way to open Outlook files on your Mac but may be worth it if you use a lot of Windows only applications. Open the file explorer by double-clicking the desired file. Locate “Compressed Folder Tools” at the top of the File Explorer menu. Click “Extract” immediately below “Compressed Folder Tools”. Wait for a pop-up window to appear. At the bottom of the pop-up window click “Extract”. Once unzipped the contents of the file should be. Using “Finder” to find Files. To open Finder, click on the icon located on the extreme left on the Dock. The finder icon is usually the first icon on the Dock. In the search box, type the search query. The “name matches/suggestions” to your query will appear as you start typing.
You're now ready to use Migration Assistant to move your files from the old Mac to the new one.
When asked to select a Mac, Time Machine backup, or other startup disk, select the other Mac. Then click Continue.
If you see a security code, make sure that it's the same code shown on your new Mac. Then click Continue.
If you're not keeping your old Mac, learn what to do before you sell, give away, or trade in your old Mac.