protected function activateRecipient()
	{
		$this->Template = new FrontendTemplate('mod_newsletter');

		/** @var OptIn $optIn */
		$optIn = System::getContainer()->get('contao.opt-in');

		// Find an unconfirmed token
		if ((!$optInToken = $optIn->find(Input::get('token'))) || !$optInToken->isValid() || \count($arrRelated = $optInToken->getRelatedRecords()) < 1 || key($arrRelated) != 'tl_newsletter_recipients' || \count($arrIds = current($arrRelated)) < 1)
		{
			$this->Template->type = 'error';
			$this->Template->message = $GLOBALS['TL_LANG']['MSC']['invalidToken'];

			return;
		}

		if ($optInToken->isConfirmed())
		{
			$this->Template->type = 'error';
			$this->Template->message = $GLOBALS['TL_LANG']['MSC']['tokenConfirmed'];

			return;
		}

		$arrRecipients = array();

		// Validate the token
		foreach ($arrIds as $intId)
		{
			if (!$objRecipient = NewsletterRecipientsModel::findByPk($intId))
			{
				$this->Template->type = 'error';
				$this->Template->message = $GLOBALS['TL_LANG']['MSC']['invalidToken'];

				return;
			}

			if ($optInToken->getEmail() != $objRecipient->email)
			{
				$this->Template->type = 'error';
				$this->Template->message = $GLOBALS['TL_LANG']['MSC']['tokenEmailMismatch'];

				return;
			}

			$arrRecipients[] = $objRecipient;
		}

		$time = time();
		$arrAdd = array();
		$arrCids = array();

		// Activate the subscriptions
		foreach ($arrRecipients as $objRecipient)
		{
			$arrAdd[] = $objRecipient->id;
			$arrCids[] = $objRecipient->pid;

			$objRecipient->tstamp = $time;
			$objRecipient->active = '1';
			$objRecipient->save();
		}

		$optInToken->confirm();

		// HOOK: post activation callback
		if (isset($GLOBALS['TL_HOOKS']['activateRecipient']) && \is_array($GLOBALS['TL_HOOKS']['activateRecipient']))
		{
			foreach ($GLOBALS['TL_HOOKS']['activateRecipient'] as $callback)
			{
				$this->import($callback[0]);
				$this->{$callback[0]}->{$callback[1]}($optInToken->getEmail(), $arrAdd, $arrCids);
			}
		}

		// Confirm activation
		$this->Template->mclass = 'confirm';
		$this->Template->message = $GLOBALS['TL_LANG']['MSC']['nl_activate'];
	}