Hi John Zybko,
Good day and thank you for outlining your concern so clearly.
Currently, there is no setting in the New Outlook to automatically close the original email after replying or forwarding. This behavior exists only in Classic Outlook for Windows, and it has not been implemented in New Outlook as of now. I understand the inconvenience caused by the absence of a previously relied‑upon feature in the New Outlook version.
New Outlook is built on a different, web-based architecture, and as a result, many classic Win32 features were not carried over during its redesign. Feature parity with Classic Outlook remains incomplete, as Microsoft has prioritized modern, conversation-based workflows and consistency with the web experience over traditional window-management controls.
However, I believe this process could be greatly impacting to your workflow, I highly recommend submitting a suggestion directly from Outlook by navigating to: Outlook · Community or post your concern as an idea to Outlook in-app feedback site Contact support and provide feedback within the new Outlook for Windows - Microsoft Support. This is the most effective way to ensure your voice reaches the product team and can be considered for future improvements.
Once you've submitted your feedback, feel free to share the link here in the comments. I’ll be happy to upvote it to help bring more visibility.
Note: As Microsoft Community moderators, please note that we are not involved in product design decisions and do not have direct access to the development roadmap, we want to assure you that your feedback has been acknowledged and is valued.
In the meantime, if you see my replies bring helpful information, please kindly accept it as an answer and vote it up by your original account, which raised this question. Once marked, it will automatically pin to top. As other users will also search information in this community, your valuable vote up will definitely also help other users who have similar queries easily to find the correct channel and useful information more quickly.
I hope this provides enough clarity and helps you stay inform with your current situation.
Thank you for your patience and your understanding. If you have any questions or need further assistance, please feel free to share them in the comments on this post so I can continue to support you.
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