Greetings! While there is a work-around - https://community.canvaslms.com/docs/DOC-6061#comments - quickly getting information regarding date of last course access - and a means of quickly contacting absent students - seems like a basic functionality that Canvas should have. If my CCC folks are with me on this, let's put it up as a suggestion and make it happen.
The ask - a means of readily identifying and messaging students who have not accessed the course since a particular date or a certain number of days - much like we can contact students who earned a certain score. We've all had students who come in, complete all the introductory work so that you don't drop them - and then they disappear.
As always, I'd love to be told that I am an idiot and this exists - or shut and wait as it is set to happen. For now, I'll manually identify and contact these students - not a big deal, but it seems like a no-brainer to implement.