Using older versions of Outlook for Mac for personal email and calendar
Although I appreciate the reply, there will be so many people who will be unhappy with this choice.
I will not switch over to the new outlook ever if I have a choice.
My comment was *not at all* intended as a solution. I always used the possibility to edit subject lines extensively. Also manually and by scripting / development.
I just wanted to mention that in some Microsoft products
"the subject line is now considered a part of the message body and cannot be edited separately"
and in other parts of the Microsoft planet people build functions to bulk edit subject lines rule based.
By the way:
Here does Microsoft explain how to edit an email subject line and informs that this documentation applies to
Outlook for Microsoft 365, Outlook 2024, Outlook 2021, Outlook 2019, Outlook 2016, Outlook 2013