I like this behaviour for a number of reasons, however I'm stuck with my current email.
When I try to unset it:
the button fades and exactly the same XHR request (with exactly the same response) is made:
But the email is there after the page reload.
I've found a few related questions, e.g. E-Mail Preferences Act Very Stubbornly!.
Is it possible to make my email empty? If no, can this be allowed? Please tell me I don't have to verify the ‹empty string› email... :(