Someone monitors "john.thero@amarincorp" I know this because I emailed that email directly, and during a conversation with investor relations on the phone, she brought up my email that was sent to that address.
I haven't emailed singer.
I emailed Lars two days ago, no response.
My personal takeaway is that it's monitored, but they don't respond for legal reasons. Any response through this "unofficial" channel would open the door for lawsuits of improper communications.