I’m embarrassed to say I’ve just discovered that Thunderbird can display emails by day received i.e. Today, Yesterday , Last Week etc. I stumbled across this only by accident and had to ask a neighbor who kindly new how to setup. It’s certainly not a default view as I’ve never seen it on a fresh install. In case I’m not the only one, first simply select the sort view first then ‘group by sort’ . Image below: