M365 Outlook Web App (How To) Remove Inline attachment Previews
This article covers how to remove automatic content boxes that pop-up in an email after a link is inserted.
- Begin by clicking the gear icon in the upper right corner and clicking on Mail under Your app settings.

- In the following window, navigate to Mail > Layout > Inline attachment Preview. You should see the Inline attachment preview options window like the screenshot below.

- Choose the "Don't show" option by clicking on it and click Save to disable Inline attachment previews.
