Recent Mentions and Reaction

I would like to get a function like in Slack, open a list of reactions on the button “recent mentions”

Assuming that you’re using Mattermost 7.0 or higher, did you try clicking on the @ icon in top menu? This opens a view with the latest mentions of your user.

just the reaction is not delayed there, that is, if you just put the results, but it is not checked, so as not to see all the reactions.