Using SMS for this may work better than email. Email passwordless tends to get bogged down in little problems. Like the email is slow or goes to the spam folder. Or on mobile, clicking a link in an email may not take you into the web browser you actually want to use the app in. SMS at least should improve on these two problems.
Passwordless would allow you to do that quite easily. Only risk are the shorter tokens (can be balanced by shorter validity, though). There is a short description of how to do it in the documentation
