Outlook does not support CSS media queries in email rendering — but that doesn’t mean responsive design is impossible in Outlook-compatible emails.
Quick Answer
No, desktop Outlook (2016, 2019, 2021, and Microsoft 365) does not execute CSS @media rules. It renders HTML email using Microsoft Word’s engine, which strips or ignores most modern CSS. Outlook on the web (OWA) and Outlook for Mac do support media queries — but only when viewing emails in a browser viewport wider than 480px and only if the email wasn’t forwarded through Outlook desktop first.
All the Methods
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