Additional features, settings, or issues not covered by specific Microsoft Teams categories
Hello Y.Feng,
Thanks for your post in Microsoft community. Generally mark as read option is not available for deleted message ping. We do understand your requirement, so check at our end to find some workaround and find that we can temporary remove such message “this message has been deleted” by click on “cancel (X)” it will disappear for the moment but again if we open such activity feed, it will appear again. So you can use cancel option for temporary basis.
Regarding your requirement, we appreciate your suggestion and so for that we recommend you to submit your suggestion on our Teams UserVoice link via https://microsoftteams.uservoice.com/forums/555103-public. We set that forum to collect your votes using feedback for Teams, and the development team will check your suggestion there and may consider to develop it. We would think highly of each customer’s feedback on our product and we appreciate for your precious suggestion on how we could improve our products.
Many thanks for kind understanding and co-operation.
Thanks and regards,
Ankita Vaidya