Add Newsletter Subscriber at checkout page Magento2

By vijayrami

Sunday, November 28, 2021

In this post we will check how to add newsletter subscriber at checkout page in Magento2.

You can find complete module on Github at Magelearn_NewsletterSubscribeAtCheckout

Let's start it by creating custom module.

Create folder inside app/code/Magelearn/NewsletterSubscribeAtCheckout

Add registration.php file in it:

<?php
 
\Magento\Framework\Component\ComponentRegistrar::register(
    \Magento\Framework\Component\ComponentRegistrar::MODULE,
    'Magelearn_NewsletterSubscribeAtCheckout',
    __DIR__
);

Add composer.json file in it:

{
    "name": "magelearn/magento2-newsletter-subscribe-at-checkout",
    "description": "This module allows to enable a newsletter subscription checkbox on the checkout page. Customers can subscribe to your newsletter list in Marketing > Communications > Newsletter Subscribers during checkout.",
    "type": "magento2-module",
    "license": "proprietary",
    "version": "1.0.0",
    "authors": [
        {
            "name": "Vijay Rami",
            "email": "vijaymrami@gmail.com"
        }
    ],
    "minimum-stability": "dev",
    "require": {},
    "autoload": {
        "files": [
            "registration.php"
        ],
        "psr-4": {
            "Magelearn\\NewsletterSubscribeAtCheckout\\": ""
        }
    }
}

Add etc/module.xml file in it:

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Module/etc/module.xsd">
    <module name="Magelearn_NewsletterSubscribeAtCheckout" setup_version="1.0.0">
        <sequence>
            <module name="Magento_Checkout"/>
            <module name="Magento_Newsletter"/>
        </sequence>
    </module>
</config>

Now, we will add database setup script.

Create db_schema.xml file in etc folder.

this script will add new column `newsletter_subscribe` in `quote` table.

<?xml version="1.0"?>
<schema xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Setup/Declaration/Schema/etc/schema.xsd">
    <table name="quote" resource="checkout" engine="innodb" comment="Newsletter Subscribe At Checkout">
        <column xsi:type="int" name="newsletter_subscribe" padding="5" unsigned="true" nullable="false" identity="false" default="0" comment="Newsletter Subscribe"/>
    </table>
</schema>

To validate this db_schema.xml file we will first run below command:

php bin/magento setup:db-declaration:generate-whitelist --module-name=Magelearn_NewsletterSubscribeAtCheckout

This command will automatically generate db_schema_whitelist.json file inside etc folder.

First we will provide some default configurations for this new field.

Add app/code/Magelearn/DeliveryDate/etc/adminhtml/system.xml file.

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_Config:etc/system_file.xsd">
    <system>
        <section id="checkout" translate="label" type="text" sortOrder="305" showInDefault="1" showInWebsite="1" showInStore="1">
            <class>separator-top</class>
            <label>Checkout</label>
            <tab>sales</tab>
            <resource>Magento_Checkout::checkout</resource>
            <group id="magelearn_newslettersubscribeatcheckout" translate="label" sortOrder="120" showInDefault="1" showInWebsite="1" showInStore="1">
                <label>Newsletter Subscribe At Checkout</label>
                <field id="enabled" translate="label" type="select" sortOrder="10" showInDefault="1" showInWebsite="1" showInStore="1">
                    <label>Enabled</label>
                    <source_model>Magento\Config\Model\Config\Source\Yesno</source_model>
                </field>
                <field id="checked" translate="label" type="select" sortOrder="20" showInDefault="1" showInWebsite="1" showInStore="1">
                    <label>Checked</label>
                    <source_model>Magento\Config\Model\Config\Source\Yesno</source_model>
                    <comment>This will pre-tick the newsletter checkbox.</comment>
                    <depends>
                        <field id="enabled">1</field>
                    </depends>
                </field>
                <field id="label" translate="label" type="text" sortOrder="30" showInDefault="1" showInWebsite="1" showInStore="1">
                    <label>Label</label>
                    <validate>validate-no-empty</validate>
                    <comment>E.g: Subscribe for Newsletter</comment>
                    <depends>
                        <field id="enabled">1</field>
                    </depends>
                </field>
                <field id="note_enabled" translate="label" type="select" sortOrder="40" showInDefault="1" showInWebsite="1" showInStore="1">
                    <label>Enable Note</label>
                    <source_model>Magento\Config\Model\Config\Source\Yesno</source_model>
                    <comment>Enable a note right below the newsletter subscription.</comment>
                    <depends>
                        <field id="enabled">1</field>
                    </depends>
                </field>
                <field id="note" translate="label" type="textarea" sortOrder="50" showInDefault="1" showInWebsite="1" showInStore="1">
                    <label>Text for Note</label>
                    <comment>E.g: Subscribe now and receive great discount codes monthly. HTML is supported.</comment>
                    <depends>
                        <field id="enabled">1</field>
                        <field id="note_enabled">1</field>
                    </depends>
                </field>
            </group>
        </section>
    </system>
</config>

Now, we will provide some pre-selected configuration values in etc/config.xml file.

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_Store:etc/config.xsd">
    <default>
        <checkout>
            <magelearn_newslettersubscribeatcheckout>
                <enabled>0</enabled>
                <checked>0</checked>
                <label>Subscribe for Newsletter</label>
                <note_enabled>0</note_enabled>
            </magelearn_newslettersubscribeatcheckout>
        </checkout>
    </default>
</config>

We will add this newsletter subscriber field by adding UI Component (Magento\Checkout\Block\Onepage\layoutProcessors) and modifying layout file (checkout_index_index.xml).

Add app/code/Magelearn/NewsletterSubscribeAtCheckout/view/frontend/layout/checkout_index_index.xml file.

<?xml version="1.0"?>
<page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" layout="checkout" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd">
    <body>
        <referenceBlock name="checkout.root">
            <arguments>
                <argument name="jsLayout" xsi:type="array">
                    <item name="components" xsi:type="array">
                        <item name="checkout" xsi:type="array">
                            <item name="children" xsi:type="array">
                                <item name="steps" xsi:type="array">
                                    <item name="children" xsi:type="array">
                                        <item name="shipping-step" xsi:type="array">
                                            <item name="children" xsi:type="array">
                                                <item name="shippingAddress" xsi:type="array">
                                                    <item name="children" xsi:type="array">
                                                        <item name="customer-email" xsi:type="array">
                                                            <item name="config" xsi:type="array">
                                                                <item name="template" xsi:type="string">Magelearn_NewsletterSubscribeAtCheckout/form/element/email</item>
                                                            </item>
                                                            <item name="children" xsi:type="array">
                                                                <item name="newsletter_subscribe" xsi:type="array">
                                                                    <item name="component" xsi:type="string">Magento_Ui/js/form/form</item>
                                                                    <item name="displayArea" xsi:type="string">newsletter_subscribe</item>
                                                                    <item name="config" xsi:type="array">
                                                                        <item name="template" xsi:type="string">Magelearn_NewsletterSubscribeAtCheckout/form/element/newsletter_subscribe</item>
                                                                    </item>
                                                                </item>
                                                            </item>
                                                        </item>
                                                    </item>
                                                </item>
                                            </item>
                                        </item>
                                        <item name="billing-step" xsi:type="array">
                                            <item name="children" xsi:type="array">
                                                <item name="payment" xsi:type="array">
                                                    <item name="children" xsi:type="array">
                                                        <item name="customer-email" xsi:type="array">
                                                            <item name="config" xsi:type="array">
                                                                <item name="template" xsi:type="string">Magelearn_NewsletterSubscribeAtCheckout/form/element/email</item>
                                                            </item>
                                                            <item name="children" xsi:type="array">
                                                                <item name="newsletter_subscribe" xsi:type="array">
                                                                    <item name="component" xsi:type="string">Magento_Ui/js/form/form</item>
                                                                    <item name="displayArea" xsi:type="string">newsletter_subscribe</item>
                                                                    <item name="config" xsi:type="array">
                                                                        <item name="template" xsi:type="string">Magelearn_NewsletterSubscribeAtCheckout/form/element/newsletter_subscribe</item>
                                                                    </item>
                                                                </item>
                                                            </item>
                                                        </item>
                                                    </item>
                                                </item>
                                            </item>
                                        </item>
                                    </item>
                                </item>
                            </item>
                        </item>
                    </item>
                </argument>
            </arguments>
        </referenceBlock>
    </body>
</page>

As per defined in checkout_index_index.xml file, first we will modify app/code/Magelearn/NewsletterSubscribeAtCheckout/view/frontend/web/template/form/element/email.html file.

We will override vendor/magento/module-checkout/view/frontend/web/template/form/element/email.html and add `newsletter_subscribe` region in that.

Add app/code/Magelearn/NewsletterSubscribeAtCheckout/view/frontend/web/template/form/element/email.html

<!-- ko ifnot: isCustomerLoggedIn() -->
 
<!-- ko foreach: getRegion('before-login-form') -->
<!-- ko template: getTemplate() --><!-- /ko -->
<!-- /ko -->
<form class="form form-login" data-role="email-with-possible-login"
      data-bind="submit:login"
      method="post">
    <fieldset id="customer-email-fieldset" class="fieldset" data-bind="blockLoader: isLoading">
        <div class="field required">
            <label class="label" for="customer-email"><span data-bind="i18n: 'Email Address'"></span></label>
            <div class="control _with-tooltip">
                <input class="input-text"
                       type="email"
                       data-bind="
                            textInput: email,
                            hasFocus: emailFocused,
                            afterRender: emailHasChanged,
                            mageInit: {'mage/trim-input':{}}"
                       name="username"
                       data-validate="{required:true, 'validate-email':true}"
                       id="customer-email" />
                <!-- ko template: 'ui/form/element/helper/tooltip' --><!-- /ko -->
                <span class="note" data-bind="fadeVisible: isPasswordVisible() == false"><!-- ko i18n: 'You can create an account after checkout.'--><!-- /ko --></span>
            </div>
        </div>
         
        <!-- ko foreach: getRegion('newsletter_subscribe') -->
            <!-- ko template: getTemplate() --><!-- /ko -->
        <!--/ko-->
         
        <!--Hidden fields -->
        <fieldset class="fieldset hidden-fields" data-bind="fadeVisible: isPasswordVisible">
            <div class="field">
                <label class="label" for="customer-password"><span data-bind="i18n: 'Password'"></span></label>
                <div class="control">
                    <input class="input-text"
                           data-bind="
                                attr: {
                                    placeholder: $t('Password'),
                                }"
                           type="password"
                           name="password"
                           id="customer-password"
                           data-validate="{required:true}" autocomplete="off"/>
                    <span class="note" data-bind="i18n: 'You already have an account with us. Sign in or continue as guest.'"></span>
                </div>
 
            </div>
            <!-- ko foreach: getRegion('additional-login-form-fields') -->
            <!-- ko template: getTemplate() --><!-- /ko -->
            <!-- /ko -->
            <div class="actions-toolbar">
                <input name="context" type="hidden" value="checkout" />
                <div class="primary">
                    <button type="submit" class="action login primary" data-action="checkout-method-login"><span data-bind="i18n: 'Login'"></span></button>
                </div>
                <div class="secondary">
                    <a class="action remind" data-bind="attr: { href: forgotPasswordUrl }">
                        <span data-bind="i18n: 'Forgot Your Password?'"></span>
                    </a>
                </div>
            </div>
        </fieldset>
        <!--Hidden fields -->
    </fieldset>
</form>
<!-- /ko -->
 
<!-- ko if: isCustomerLoggedIn() -->
 
<form class="form form-login" data-role="email-with-possible-login" data-bind="submit:login" method="post">
    <fieldset id="customer-email-fieldset" class="fieldset" data-bind="blockLoader: isLoading">
        <div class="field required">
            <label class="label" for="customer-email">
                <span data-bind="i18n: 'Email Address'"></span>
            </label>
            <div class="control _with-tooltip">
                <input class="input-text"
                       type="email"
                       data-bind="
                            textInput: email,
                            hasFocus: emailFocused"
                       name="username"
                       data-validate="{required:true, 'validate-email':true}"
                       id="customer-email" />
                <!-- ko template: 'ui/form/element/helper/tooltip' --><!-- /ko -->
                <span class="note" data-bind="fadeVisible: isPasswordVisible() == false"><!-- ko i18n: 'You can create an account after checkout.'--><!-- /ko --></span>
            </div>
        </div>
 
        <!-- ko foreach: getRegion('newsletter_subscribe') -->
            <!-- ko template: getTemplate() --><!-- /ko -->
        <!--/ko-->
 
    </fieldset>
</form>
 
<!-- /ko -->

Now we will add app/code/Magelearn/NewsletterSubscribeAtCheckout/view/frontend/web/template/form/element/newsletter_subscribe.html file.

<!-- ko if: enabled -->
    <div class="field">
        <div class="control">
            <input class="input-text"
                   type="checkbox"
                   data-bind="textInput: 1, checked: checked"
                   name="newsletter_subscribe"
                   id="newsletter_subscribe"
                   checked="checked" />
            <label class="label" for="newsletter_subscribe">
                <span data-bind="i18n: label"></span>
            </label>
        </div>
 
        <!-- ko if: note_enabled -->
            <span class="note" data-bind="html: note"></span>
        <!-- /ko -->
 
    </div>
<!-- /ko -->

Now we will add app/code/Magelearn/NewsletterSubscribeAtCheckout/etc/frontend/di.xml file and modify Magento\Checkout\Block\Onepage\layoutProcessors to define display area for newsletter_subscribe with UI Component fields.

Add app/code/Magelearn/NewsletterSubscribeAtCheckout/etc/frontend/di.xml

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
    <type name="Magento\Checkout\Block\Onepage">
        <arguments>
            <argument name="layoutProcessors" xsi:type="array">
                <item name="newsletterSubscribeConfig" xsi:type="object">Magelearn\NewsletterSubscribeAtCheckout\Model\Config\Source\NewsletterSubscribeLayoutProcessor</item>
            </argument>
        </arguments>
    </type>
</config>

Now as per defined in di.xml file add app/code/Magelearn/NewsletterSubscribeAtCheckout/Model/Config/Source/NewsletterSubscribeLayoutProcessor.php file.

<?php
 
namespace Magelearn\NewsletterSubscribeAtCheckout\Model\Config\Source;
 
use Magelearn\NewsletterSubscribeAtCheckout\Helper\Data as Helper;
 
/**
 * Class NewsletterSubscribeLayoutProcessor
 * @package Magelearn\NewsletterSubscribeAtCheckout\Model\Config\Source
 */
class NewsletterSubscribeLayoutProcessor
{
    /**
     * @var Helper
     */
    private $helper;
 
    /**
     * NewsletterSubscribeLayoutProcessor constructor.
     * @param Helper $helper
     */
    public function __construct(
        Helper $helper
    ) {
        $this->helper = $helper;
    }
 
    /**
     * {@inheritdoc}
     */
    public function process($jsLayout)
    {
        $enabled = ($this->helper->getConfig('enabled')) ? 1 : 0;
        $checked = ($this->helper->getConfig('checked')) ? 1 : 0;
        $label = $this->helper->getConfig('label');
        $note_enabled = ($this->helper->getConfig('note_enabled')) ? 1 : 0;
        $note = $this->helper->getConfig('note');
 
        $config = [
            'customer-email' => [
                'children' => [
                    'newsletter_subscribe' => [
                        'config' => [
                            'enabled' => $enabled,
                            'checked' => $checked,
                            'label' => $label,
                            'note_enabled' => $note_enabled,
                            'note' => $note
                        ]
                    ]
                ]
            ]
        ];
 
        $updateLayout = [
            'components' => [
                'checkout' => [
                    'children' => [
                        'steps' => [
                            'children' => [
                                'billing-step' => [
                                    'children' => [
                                        'payment' => [
                                            'children' => $config
                                        ]
                                    ]
                                ],
                                'shipping-step' => [
                                    'children' => [
                                        'shippingAddress' => [
                                            'children' => $config
                                        ]
                                    ]
                                ]
                            ]
                        ]
                    ]
                ]
            ]
        ];
 
        // Merge updated layout with existing one
        return array_merge_recursive($jsLayout, $updateLayout);
    }
}

Now we will add our helper file at app/code/Magelearn/NewsletterSubscribeAtCheckout/Helper/Data.php

<?php
 
namespace Magelearn\NewsletterSubscribeAtCheckout\Helper;
 
/**
 * Class Data
 * @package Magelearn\NewsletterSubscribeAtCheckout\Helper
 */
class Data extends \Magento\Framework\App\Helper\AbstractHelper
{
    /**
     * @var string
     */
    private $tab = 'checkout';
 
    /**
     * Get module configuration values from core_config_data
     *
     * @param $setting
     * @return mixed
     */
    public function getConfig($setting)
    {
        return $this->scopeConfig->getValue(
            $this->tab . '/magelearn_newslettersubscribeatcheckout/' . $setting,
            \Magento\Store\Model\ScopeInterface::SCOPE_STORE
        );
    }
}

Now we will pass this newsletter_subscribe checkbox value in `extension_attributes` array by overriding vendor/magento/module-checkout/view/frontend/web/js/model/shipping-save-processor/payload-extender.js

For that add app/code/Magelearn/NewsletterSubscribeAtCheckout/view/frontend/requirejs-config.js

var config = {
    config: {
        mixins: {
            'Magento_Checkout/js/model/shipping-save-processor/payload-extender': {
            'Magelearn_NewsletterSubscribeAtCheckout/js/model/shipping-save-processor/payload-extender-mixin': true
            }
        }
    }
};

Now add app/code/Magelearn/NewsletterSubscribeAtCheckout/view/frontend/web/js/model/shipping-save-processor/payload-extender-mixin.js

define([
    'jquery',
    'underscore',
    'mage/utils/wrapper'
], function (
    $,
    _,
    wrapper
) {
    'use strict';
 
    return function (payloadExtender) {
        return wrapper.wrap(payloadExtender, function (originalPayloadExtender, payload) {
            var newsletter = $('[name="newsletter_subscribe"]').prop("checked") == true ? 1 : 0;
            payload = originalPayloadExtender(payload);
                        
            _.extend(payload.addressInformation,{
                extension_attributes: {
                    'newsletter_subscribe': newsletter
                }   
            });
            return payload
        });
    };
});

Now we will add etc/di.xml file and add plugin for Magento\Checkout\Model\ShippingInformationManagement to save newsletter_subscribe in quote object.

Before that we will add extension_attributes.xml file and define this new field.

Add app/code/Magelearn/NewsletterSubscribeAtCheckout/etc/extension_attributes.xml

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Api/etc/extension_attributes.xsd">
    <extension_attributes for="Magento\Checkout\Api\Data\ShippingInformationInterface">
        <attribute code="newsletter_subscribe" type="integer"/>
    </extension_attributes>
</config>

Now add app/code/Magelearn/NewsletterSubscribeAtCheckout/etc/di.xml

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
    <type name="Magento\Checkout\Model\ShippingInformationManagement">
        <plugin name="magelearn_newslettersubscriptionatcheckout_shippinginformationmanagement" type="Magelearn\NewsletterSubscribeAtCheckout\Model\Plugin\Checkout\ShippingInformationManagement" sortOrder="10"/>
    </type>
</config>

Now add our Plugin file at app/code/Magelearn/NewsletterSubscribeAtCheckout/Model/Plugin/Checkout/ShippingInformationManagement.php

<?php
 
namespace Magelearn\NewsletterSubscribeAtCheckout\Model\Plugin\Checkout;
 
use Magento\Quote\Model\QuoteRepository as QuoteRepository;
use Magento\Checkout\Api\Data\ShippingInformationInterface as ShippingInformationInterface;
use Magelearn\NewsletterSubscribeAtCheckout\Helper\Data as Helper;
 
/**
 * Class ShippingInformationManagement
 * @package Magelearn\NewsletterSubscribeAtCheckout\Model\Plugin\Checkout
 */
class ShippingInformationManagement
{
    /**
     * @var QuoteRepository
     */
    private $quoteRepository;
 
    /**
     * @var ShippingInformationInterface
     */
    private $extensionFactory;
 
    /**
     * @var Helper
     */
    private $helper;
 
    /**
     * ShippingInformationManagement constructor.
     * @param QuoteRepository $quoteRepository
     * @param Helper $helper
     * @param ShippingInformationInterface $extensionFactory
     */
    public function __construct(
        QuoteRepository $quoteRepository,
        Helper $helper,
        ShippingInformationInterface $extensionFactory
    ) {
        $this->quoteRepository = $quoteRepository;
        $this->helper = $helper;
        $this->extensionFactory = $extensionFactory;
    }
 
    /**
     * @param \Magento\Checkout\Model\ShippingInformationManagement $subject
     * @param $cartId
     * @param \Magento\Checkout\Api\Data\ShippingInformationInterface $addressInformation
     */
    public function beforeSaveAddressInformation(
        \Magento\Checkout\Model\ShippingInformationManagement $subject,
        $cartId,
        \Magento\Checkout\Api\Data\ShippingInformationInterface $addressInformation
    ) {
 
        // Check if feature is enabled
        if ($this->helper->getConfig('enabled')) {
            $extAttributes = $addressInformation->getExtensionAttributes();
            $newsletterSubscribe = $extAttributes->getNewsletterSubscribe() ? 1 : 0;
 
            $quote = $this->quoteRepository->getActive($cartId);
            $quote->setNewsletterSubscribe($newsletterSubscribe);
        }
    }
}

At last we called event `sales_model_service_quote_submit_success` to successfully add customer email address to newsletter subscriber.

Add app/code/Magelearn/NewsletterSubscribeAtCheckout/etc/events.xml

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Event/etc/events.xsd">
    <event name="sales_model_service_quote_submit_success">
        <observer name="magelearn_newslettersubscribeatcheckout_sales_model_service_quote_submit_success" instance="Magelearn\NewsletterSubscribeAtCheckout\Observer\EventSalesModelServiceQuoteSubmitSuccess" />
    </event>
</config>

Now add our observer file at app/code/Magelearn/NewsletterSubscribeAtCheckout/Observer/EventSalesModelServiceQuoteSubmitSuccess.php

<?php
 
namespace Magelearn\NewsletterSubscribeAtCheckout\Observer;
 
use Magento\Framework\Event\ObserverInterface;
use Magento\Newsletter\Model\Subscriber as Subscriber;
use Magelearn\NewsletterSubscribeAtCheckout\Helper\Data as Helper;
 
/**
 * Class EventSalesModelServiceQuoteSubmitSuccess
 * @package Magelearn\NewsletterSubscribeAtCheckout\Observer
 */
class EventSalesModelServiceQuoteSubmitSuccess implements ObserverInterface
{
    /**
     * @var Subscriber
     */
    private $subscriber;
 
    /**
     * @var Helper
     */
    private $helper;
 
    /**
     * @var \Psr\Log\LoggerInterface
     */
    private $logger;
 
    /**
     * EventSalesModelServiceQuoteSubmitSuccess constructor.
     * @param Subscriber $subscriber
     * @param Helper $helper
     * @param \Psr\Log\LoggerInterface $logger
     */
    public function __construct(
        Subscriber $subscriber,
        Helper $helper,
        \Psr\Log\LoggerInterface $logger
    ) {
        $this->subscriber = $subscriber;
        $this->helper = $helper;
        $this->logger = $logger;
    }
 
    /**
     * Subscribe to newsletters if customer checked the checkbox
     *
     * @param \Magento\Framework\Event\Observer $observer
     * @return boolean|$this
     */
    public function execute(\Magento\Framework\Event\Observer $observer)
    {
        // Check if feature is disabled
        if (!$this->helper->getConfig('enabled')) {
            return;
        }
 
        $quote = $observer->getQuote();
 
        // Get newsletter subscription flag from quote
        if ($quote->getNewsletterSubscribe()) {
            try {
                $email = $quote->getCustomerEmail();
                $this->subscriber->subscribe($email);
            } catch (\Exception $e) {
                $this->logger->error($e->getMessage());
            }
        }
         
        return $this;
    }
}

Tag : Knockout JS, Magento2, Magento2 Checkout, Magento2 Plugins, Newsletter

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Add Newsletter Subscriber at checkout page Magento2

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Add Newsletter Subscriber at checkout page Magento2

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