如何在Drupal 8中发送HTML格式的邮件而不是默认的电子邮件格式

Question

How can we send a html formatted mail in Drupal 8 instead of default format that given by Drupal core. Such as default email format for user account creation, how can we send this in Html format?

Drupal 8 account creation email format

Answer 1

You can have a look at the HTML Mail module but the drupal 8 version is still in alpha :/ .

Another simple alternative is to implement hook_mail_alter in order to :

• Set the proper content-type in the message headers.
• Use the proper formatter to preserve HTML tags (which, by default, would be escaped).
• Put HTML tags in email messages without relying on additional module.

The only thing to do now is to write some HTML in the messages, and this should do the job :

/**
 * Implements hook_mail_alter().
 */
function modulename_mail_alter(&$message) {
  switch ($message['key']) {
    case 'register_admin_created':
    #case '<other HTML message id>': 
    #...
      $message['headers']['Content-Type'] = 'text/html; charset=UTF-8;';
      foreach ($message['body'] as $key => &$body) {
        $body = new Drupal\Component\Render\FormattableMarkup($body, []);
      }
      break;
  }
}