I'm running Outlook Version 2020 Enterprise (as part of the MS 365 Apps for Enterprise [as an aside: is there anybody else who feels they have stolen our Sundays?]).
I have a particular email message I need to refer to during my current work task. I would like to visually mark it so that I am able to find it quickly, as it is not on the top of my date-sorted list any longer. In Thunderbird I would click the "star" but best would be to give it a different background or font color/size/weight in the list. The only possibility I could find was to "give it the little flag" to mark it as a to-do task (I'm on the German version so I may not label things with the exact English wording, my apologies for that). It then has a very pale yellow background. But in all reality, this email is not a task. It doesn't have a date attached, it should not appear on my todo list.
Alternatively I could create a rule or define conditional formatting based on that message but that's overkill. I could also move it to a temporary folder but that's overkill as well and removes the message from its context.
I think my request is simple and occurs regularly to typical users (I received a booking or order confirmation, need to get back to somebody later, whatever), so it's likely possible and I'm missing something.
Is there a simple, non-semantic way to make an arbitrary message visually stand out in the Outlook message list?