I arrived here looking for a reminder plugin. Looks like the thread is really old, so maybe this is i implemented in a new plugin or feature…
In my case, I need a reminder plugin to add a list of topics to my “respond to this later” list, similar to the /remind function of slackbot. This would be a kind of “self-assigning” reminder - you are only reminded of things which you yourself have asked to be reminded of. Kind of like bookmarks, but with a date attached.