Using Classic Outlook on Windows for personal email, calendar, and contact management
Many thanks for your prompt response.
I think I got you. After thorough tests and consults from my end, been advised that adding the email alias as the default from address in the outlook app is not yet feasible. For now you can only change manually as you pointed out. I do understand your need for this, and we do apologize if we are not able to meet your requirements. However, we will surely raise you concerns to our Product Team and hopefully this can be included in the future updates.
In the meantime, I do think that this can be a great addition to the app. If you don't mind, provide feedback on this feature request by creating a new post in the Feedback Portal at Outlook · Community (microsoft.com), Microsoft is committed to enhancing the customer experience by continually examining suggestions to include in the design and development of future product upgrades based on your suggestions.
Your kind understanding is highly appreciated.
Thank you for your precious time and have a nice day.
Best Regards,
Ashraf.