Everything about this stuff is shady. I had a feeling that this was going to happen. I asked for a vendor bond waive the other day and they said no when there was no reason they should have said no to me. Not getting into detail. May still be wrong.
Also I thought protonmail deletes the numbers after use. Says in black and white when you sign up. Why did I just get this message then?
They hash the number so people like you can't spam email addresses.