首先,在 NameSpace/ModuleName/etc/adminhtml/system.xml 文件中的section 和 group创建配置字段,如下所示:

<?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="Custom">
            <group id="email">
                <field id="email_template_field_id" translate="label comment" type="select" sortOrder="2"
                       showInDefault="1" showInWebsite="1" showInStore="1">
                    <label>Label Of Your Field</label>
                    <source_model>Magento\Config\Model\Config\Source\Email\Template</source_model>
                    <!-- This model return all transactional email template list of magento -->
                </field>
            </group>
        </section>
    </system>
</config>

然后在后台 MARKETING - Communications - Email Templates 里创建一个邮件模板,名字叫email_template_field_id ,在那里我们可以选择使用哪个电子邮件模板。

在模块的 etc/目录下创建一个电子邮件模板配置文件,文件名是email_templates.xml

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_Email:etc/email_templates.xsd">
    <template id="email_template_id" label="Label Of Your Template File" file="your_email_template.html" type="html" module="NameSpace_ModuleName" area="frontend"/>

</config>

view/frontend/email 目录下创建电子邮件模板文件,作为email_template.xml文件中指定的名称。在这里,我们将使用 email_template.html 名称作为电子邮件模板。其中第一行的@subject后面的内容为发送邮件的标题。$myvar1,$myvar2……是向邮件模版传递的变量,通过数组的形式传递。

<!--@subject Subject Of your email  @-->
<!--@vars {
"var this.getUrl($store, 'admin')":"Warehouse Account URL",
"var customer.email":"Customer Email",
"var customer.name":"Customer Name"
} @-->

{{template config_path="design/email/header_template"}} 
<!-- pathe of template header-->

<!-- here $myvar1 , $myvar2, $myvar3, $myvar4, $myvar5, $myvar6 are variables in which we asssign values when we use this template for send mail-->

<!-- you can Modify content of template according to your requirement-->
<table>
    <tr class="email-intro">
        <td>
            <p class="greeting">{{trans "%customer_name," customer_name=$myvar3}}</p>
            <p>
                {{trans "Your custom message."}}
                {{trans 'Your custom message <a href="%account_url">logging into your account</a>.' account_url=$this.getUrl($store,'admin',[_nosid:1]) |raw}}
            </p>
        </td>
    </tr>
    <tr class="email-summary">
        <td>
            <h1>{{trans 'Your Order <span class="no-link">#%increment_id</span>' increment_id=$myvar1 |raw}}</h1>
            <p>{{trans 'Placed on <span class="no-link">%created_at</span>' created_at=$myvar2 |raw}}</p>
        </td>
    </tr>
    <tr class="email-information">
        <td>
            <table class="order-details">
                <tr>
                    <td class="address-details">
                        <h3>{{trans "Billing Info"}}</h3>
                        <p>{{var myvar4|raw}}</p>
                    </td>
                </tr>
            </table>
            <table class="email-items">
                <thead>
                    <tr>
                        <th class="item-info">{{trans "Item"}}</th>
                        <th class="item-info">{{trans "Sku"}}</th>
                    </tr>
                </thead>
                <tbody>
                    {{var myvar8|raw}}
                </tbody>
            </table>
        </td>
    </tr>
</table>

{{template config_path="design/email/footer_template"}} 
<!--footer of template-->

现在模板已经准备好了,我们在需要发送邮件的地方添加以下代码,其中$receiverInfo 和 $senderInfo 分别为收件人和发件人的地址。

   /* Here we prepare data for our email  */

   /* Receiver Detail  */
   $receiverInfo = [
       'name' => 'Reciver Name',
       'email' => 'receiver@address.com'
   ];


   /* Sender Detail  */
   $senderInfo = [
       'name' => 'Sender Name',
       'email' => 'sender@addess.com',
   ];


   /* Assign values for your template variables  */
   $emailTemplateVariables = array();
   $emailTempVariables['myvar1'] = $variablevalue1;
   $emailTempVariables['myvar2'] = $variablevalue2;
                    ...
                    ...
                    ...    


   try{
       /* call send mail method from helper or where you define it*/ 
       $this->_objectManager->get('NameSpace\ModuleNmae\Helper\Email')->MailSendMethod(
             $emailTempVariables,
             $senderInfo,
             $receiverInfo
         );
       } catch (\Exception $e) {
               $this->_logger->error($e->getMessage());
               return false;
           }

我们创建一个助手函数来实现邮件发送功能。文件名 Helper/Email.php

<?php
namespace NameSpace\ModuleName\Helper;
 
/**
 * Custom Module Email helper
 */
class Email extends \Magento\Framework\App\Helper\AbstractHelper
{
    const XML_PATH_EMAIL_TEMPLATE_FIELD  ='section/group/your_email_template_field_id';
    
    /* Here section and group refer to name of section and group where you create this field in configuration*/
 
    /**
     * @var \Magento\Framework\App\Config\ScopeConfigInterface
     */
    protected $_scopeConfig;
 
    /**
     * Store manager
     *
     * @var \Magento\Store\Model\StoreManagerInterface
     */
    protected $_storeManager;
 
    /**
     * @var \Magento\Framework\Translate\Inline\StateInterface
     */
    protected $inlineTranslation;
 
    /**
     * @var \Magento\Framework\Mail\Template\TransportBuilder
     */
    protected $_transportBuilder;
     
    /**
     * @var string
    */
    protected $temp_id;
 
    /**
    * @param Magento\Framework\App\Helper\Context $context
    * @param Magento\Framework\App\Config\ScopeConfigInterface $scopeConfig
    * @param Magento\Store\Model\StoreManagerInterface $storeManager
    * @param Magento\Framework\Translate\Inline\StateInterface $inlineTranslation
    * @param Magento\Framework\Mail\Template\TransportBuilder $transportBuilder
    */
    public function __construct(
        \Magento\Framework\App\Helper\Context $context,
        \Magento\Store\Model\StoreManagerInterface $storeManager,
        \Magento\Framework\Translate\Inline\StateInterface $inlineTranslation,
        \Magento\Framework\Mail\Template\TransportBuilder $transportBuilder
    ) {
        $this->_scopeConfig = $context;
        parent::__construct($context);
        $this->_storeManager = $storeManager;
        $this->inlineTranslation = $inlineTranslation;
        $this->_transportBuilder = $transportBuilder; 
    }
 
    /**
     * Return store configuration value of your template field that which id you set for template
     *
     * @param string $path
     * @param int $storeId
     * @return mixed
     */
    protected function getConfigValue($path, $storeId)
    {
        return $this->scopeConfig->getValue(
            $path,
            \Magento\Store\Model\ScopeInterface::SCOPE_STORE,
            $storeId
        );
    }
 
    /**
     * Return store 
     *
     * @return Store
     */
    public function getStore()
    {
        return $this->_storeManager->getStore();
    }
 
    /**
     * Return template id according to store
     *
     * @return mixed
     */
    public function getTemplateId($xmlPath)
    {
        return $this->getConfigValue($xmlPath, $this->getStore()->getStoreId());
    }
 
    /**
     * [generateTemplate description]  with template file and tempaltes variables values                
     * @param  Mixed $emailTemplateVariables 
     * @param  Mixed $senderInfo             
     * @param  Mixed $receiverInfo           
     * @return void
     */
    public function generateTemplate($emailTemplateVariables,$senderInfo,$receiverInfo)
    {
        $template =  $this->_transportBuilder->setTemplateIdentifier($this->temp_id)
                ->setTemplateOptions(
                    [
                        'area' => \Magento\Framework\App\Area::AREA_FRONTEND, /* here you can defile area and store of template for which you prepare it */
                        'store' => $this->_storeManager->getStore()->getId(),
                    ]
                )
                ->setTemplateVars($emailTemplateVariables)
                ->setFrom($senderInfo)
                ->addTo($receiverInfo['email'],$receiverInfo['name']);
        return $this;        
    }
 
    /**
     * [sendInvoicedOrderEmail description]                  
     * @param  Mixed $emailTemplateVariables 
     * @param  Mixed $senderInfo             
     * @param  Mixed $receiverInfo           
     * @return void
     */
    /* your send mail method*/
    public function MailSendMethod($emailTemplateVariables,$senderInfo,$receiverInfo)
    {
 
        $this->temp_id = $this->getTemplateId(self::XML_PATH_EMAIL_TEMPLATE_FIELD);
        $this->inlineTranslation->suspend();    
        $this->generateTemplate($emailTemplateVariables,$senderInfo,$receiverInfo);    
        $transport = $this->_transportBuilder->getTransport();
        $transport->sendMessage();        
        $this->inlineTranslation->resume();
    }
 
}

邮件模板循环数组变量

创建 view/layout/order_items.xml 文件,

<?xml version="1.0"?>
<page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd" label="Low Stock Items" design_abstraction="custom">
    <body>
        <block class="Magento\Framework\View\Element\Template" name="order_items" template="NameSpace_ModuleName::stock_items.phtml"/>
    </body>
</page>

创建 view/templates/order_items.phtml 文件,

<?php $items = $block->getItems() ?>
<table class="email-items">
    <thead>
    <tr>
        <th class="item-id">
            <?= /* @escapeNotVerified */  __('ID'); ?>
        </th>
        <th class="item-name">
            <?= /* @escapeNotVerified */  __('Name'); ?>
        </th>
        <th class="item-sku">
            <?= /* @escapeNotVerified */  __('Sku'); ?>
        </th>
        <th class="item-qty">
            <?= /* @escapeNotVerified */  __('Quantity'); ?>
        </th>
        <th class="item-date">
            <?= /* @escapeNotVerified */  __('Date'); ?>
        </th>
    </tr>
    </thead>
    <tbody>
    <?php foreach ($items as $item): ?>
        <tr>
            <td><?php echo $item->getData('entity_id'); ?></td>
            <td><?php echo $item->getData('name'); ?></td>
            <td><?php echo $item->getData('sku'); ?></td>
            <td><?php echo (int)$item->getData('qty'); ?></td>
            <td><?php echo $item->getData('updated_at'); ?></td>
        </tr>
    <?php endforeach; ?>
    </tbody>
</table>

如有问题请留言,谢谢。