Honestly I'm not sure if students check email? Do y'all? The more appropriate recommendation would probably be Instagram... I haven't seen much architecture on TikTok or YouTube. Maybe ask them to bring in websites/accounts to share with the class as an assignment. "How to learn through media consumption... etc."

A different pedagogical approach would be to differentiate studio learning, rather than trying to interfere in their social media consumption. Bring in a bunch of books and magazines from the library. They probably haven't spent time appreciating the depth that monographs and the like offer. Heck, they could probably use help learning how to use a library. Institutions should offer students something they can't get anywhere else, IMO, so physical media and slower research skills would be great to introduce. They should know what different kinds of stuff they'll find in GA versus Casabella versus A+U versus El Croquis. 

This is one site I'll always recommend: https://usmodernist.org/

We had to do like weekly "book reports" on a different building or office every week. I don't remember if it was for studio or another class but the curriculum was all well planned and integrated so it always made sense. 

Even now that I'm a professional, I don't gain much by passively looking at social media or Dezeen (or even project here on Archinect) it was always much more interesting to dive into a project, even for an hour, and come up with an analysis or discussion points about it. Maybe you can have a weekly 30 minute discussion about a common building/ studio/ movement? 

Or you could do it more individually in like desk-crit mode as well.