What’s the right hook to check is the user already subscribed?

[alexgrey]

I need to make a popup-window with subscribe widget inside that popup.
It will appear after window loading, after few seconds – I’ll make it on jQuery settimeout() method.

I’ll make the popup manually. But how to set the logic of its appearing correctly?
If the person already subscribed – then don’t show it.

Do I correctly understand, that I have to use exactly this hook?
add_filter(“newsletter_user_confirmed”, “my_action_newsletter_user_confirmed”, 10, 1);

function my_action_newsletter_user_confirmed($user) {
< script > don’t appear this popup</ script >
}
Or I have to use another hook for it? How to let popup know, that user is already a subscriber?

[Author]

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