Hi @Ole Quistgaard ,
In MS Word you may personalise the shortcuts, but in Outlook, I have not found that possibility
As Leon mentioned, it's not available to add custom keyboard shortcut in Outlook, due to Outlook has a lot more functionality than just creating emails, it is more complex than Word, each Form/Inspector in Outlook have their own set of features and buttons (new mail, received mail, contact, appointment, meeting, etc...).
So, for your need, it's suggested to kindly vote in our Uservoice, which may increase the priority for our engineers to create a possible option or feature that can be included in the future updates of the program.
Hope this could be helpful to you.
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