Hi Mike Borgen,
Thank you for posting in Microsoft Q&A forum.
To add Outlook to your bookmark, please follow these steps:
If you are using Google Chrome: Go to Outlook on web, click on the star icon on the right, choose Folder as Bookmark bar, then you will be able to see Outlook in your bookmark bar:
If you are using Edge: Go to Outlook on the web, to your right, there will be a star icon, click on it and click Done. There will be Outlook on your bookmarks bar
I hope my answer helps, please feel free to let me know if you need any further assistance
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