Only the person you reply to gets the notification. The @s don't seem to work at all.
I can autocomplete a name in the PWA for Lemmy which is a markdown hyperlink which notifies. So I can @ a number of people with that method from here.
I'll add a screenshot of the process when I'm adding you. I click on your name to complete. I'm not sure if I can call you in with an @ from another reply. Maybe. I'll reply to myself in another thread somewhere and see if you get it.
