Many other MDM's provide a list of variables that are accepted for app profiles/settings. I've not been able to find something similar for Sophos.
Thanks for reaching out to the Sophos Community Forum.
Let me know if the following page includes the information you were looking for. - Placeholders
As someone who is looking for the same thing, I would say no. This is not what were are looking for. It is part of the information, but not all of the information. If you look at the text below, you will see what I am talking about. This is from the outlook for ios configuration.
Did you find this info elsewhere?
If you scroll down to the key value pairs section of this article, you will see the info needs to configured outlook for ios.
Account setup in Outlook for iOS and Android using Basic authentication | Microsoft Learn