Serching for a Viewed Post Button

Hello, I’m serching for a plugin to add a “Viewed Post” button for user to clic on to mark for themselfs that they already saw that post, and when tey see the menu they can easely identify which post they have already saw and which not. I have already search but don’t found anyone like this. Somebody knows a plugin like this?

• This topic was modified 5 years ago by Steven Stern (sterndata).