Email links are a great password system on a "mobile first web". Not so much if you are using a desktop..
How so? I only have one service that I use which employs magic links, and I use it on a desktop with no problems.
I'm starting an internal project for my company which will utilize magic links. About 50% of the users are expected to be on desktop, and 50% on iPads, so I'd like to know what the problem is for desktop users before I go too far.