This feature team has been aware of this request, and it is under review.Kevmeister68 commented
I just received the same request from a user today. Teams should be able to:
1. Have an option to show a Toaster popup notifying receipt of a message _without_ showing the message itself.
2. Have an option to not show the last message of a Private Chat underneath the Chat Contact Name.
The fact that you should have a Product Owner who actually understands the requirements of what is needed in this kind of software is also disappointing, to say the least.
And, please stop hiding behind this formality of "feature under review". It's virtually a no-brainer and making out like there is some huge decision to be made about providing this capability, especially with all the worthwhile "use cases" presented here, is patently ridiculous.