Newsletter Subscribed but No Confirmation Email – Magento 1.7.0.2

This is a default functionality of Magento.

You can check here Mage_Customer_AccountController::_getCustomer()

You can enable the email conformation for creation creation.

Or else have to override the customerAccount controller to send an email conformation for the newsletter.

When you look at

app/code/core/Mage/Newsletter/Model/Subscriber.php

public function confirm($code)
{
    if($this->getCode()==$code) {
        $this->setStatus(self::STATUS_SUBSCRIBED)
            ->setIsStatusChanged(true)
            ->save();
        return true;
    }

    return false;
}

in this method if confimration code match then it just return true nothing else

If you want to send newsletter subscription success email after confirmation then you have to modify above code with just one line

$this->sendConfirmationSuccessEmail();

But make sure that you you are overwrite core file,,so your final code should be in

app/code/local/Mage/Newsletter/Model/Subscriber.php

public function confirm($code)
{
    if($this->getCode()==$code) {
        $this->setStatus(self::STATUS_SUBSCRIBED)
            ->setIsStatusChanged(true)
            ->save();
        // We are just adding below line 
        $this->sendConfirmationSuccessEmail(); // custom line
        return true;
    }

    return false;
}