Hi @Peter Chaplin ,
Welcome to our forum!
Please kindly understand that New Outlook for Windows is similar as the Outlook Web app, which brings the latest features, intelligent assisted capabilities and a new modern and simplified design to your Outlook app.
To save emails in New Outlook for Windows, we just need to click "..." in the upper right corner of the email and click Save:
For “Open OFT templates or drag & Drop in / out attachments” you mentioned, as i know, they are not available in New Outlook. If you need to use this function, it's suggested that you could turn off New Outlook button to switch to Lagacy Outlook.
Please kindly understand that many functions are not designed at present. To get this feature more quickly, I have found similar posts in feedback collection website and you could vote for it and that. Many features of our current products are designed and upgraded based on customers’ feedback. You can also make suggestions on that website and hope Microsoft will notice this in the future. Thank you for your understanding and support.
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