3 namespace Drupal\Core\Mail;
5 use Drupal\Component\Plugin\PluginManagerInterface;
8 * Provides an interface for sending mail.
10 interface MailManagerInterface extends PluginManagerInterface {
13 * Composes and optionally sends an email message.
15 * Sending an email works with defining an email template (subject, text and
16 * possibly email headers) and the replacement values to use in the
17 * appropriate places in the template. Processed email templates are requested
18 * from hook_mail() from the module sending the email. Any module can modify
19 * the composed email message array using hook_mail_alter(). Finally
20 * \Drupal::service('plugin.manager.mail')->mail() sends the email, which can
21 * be reused if the exact same composed email is to be sent to multiple
24 * Finding out what language to send the email with needs some consideration.
25 * If you send email to a user, her preferred language should be fine, so use
26 * \Drupal\Core\Session\AccountInterface::getPreferredAdminLangcode(). If you
27 * send email based on form values filled on the page, there are two
28 * additional choices if you are not sending the email to a user on the site.
29 * You can either use the language used to generate the page or the site
30 * default language. See
31 * Drupal\Core\Language\LanguageManagerInterface::getDefaultLanguage(). The
32 * former is good if sending email to the person filling the form, the later
33 * is good if you send email to an address previously set up (like contact
34 * addresses in a contact form).
36 * Taking care of always using the proper language is even more important when
37 * sending emails in a row to multiple users. Hook_mail() abstracts whether
38 * the mail text comes from an administrator setting or is static in the
39 * source code. It should also deal with common mail tokens, only receiving
40 * $params which are unique to the actual email at hand.
45 * function example_notify($accounts) {
46 * foreach ($accounts as $account) {
47 * $params['account'] = $account;
48 * // example_mail() will be called based on the first
49 * // MailManagerInterface->mail() parameter.
50 * \Drupal::service('plugin.manager.mail')->mail('example', 'notice', $account->mail, $langcode, $params);
54 * function example_mail($key, &$message, $params) {
55 * $data['user'] = $params['account'];
56 * $options['langcode'] = $message['langcode'];
57 * user_mail_tokens($variables, $data, $options);
60 * // If the recipient can receive such notices by instant-message, do
61 * // not send by email.
62 * if (example_im_send($key, $message, $params)) {
63 * $message['send'] = FALSE;
66 * $message['subject'] = t('Notification from @site', $variables, $options);
67 * $message['body'][] = t("Dear @username\n\nThere is new content available on the site.", $variables, $options);
73 * Another example, which uses MailManagerInterface->mail() to format a
74 * message for sending later:
77 * $params = array('current_conditions' => $data);
78 * $to = 'user@example.com';
79 * $message = \Drupal::service('plugin.manager.mail')->mail('example', 'notice', $to, $langcode, $params, FALSE);
80 * // Only add to the spool if sending was not canceled.
81 * if ($message['send']) {
82 * example_spool_message($message);
86 * @param string $module
87 * A module name to invoke hook_mail() on. The {$module}_mail() hook will be
88 * called to complete the $message structure which will already contain
91 * A key to identify the email sent. The final message ID for email altering
92 * will be {$module}_{$key}.
94 * The email address or addresses where the message will be sent to. The
95 * formatting of this string will be validated with the
96 * @link http://php.net/manual/filter.filters.validate.php PHP email validation filter. @endlink
99 * - user@example.com, anotheruser@example.com
100 * - User <user@example.com>
101 * - User <user@example.com>, Another User <anotheruser@example.com>
102 * @param string $langcode
103 * Language code to use to compose the email.
104 * @param array $params
105 * (optional) Parameters to build the email.
106 * @param string|null $reply
107 * Optional email address to be used to answer.
109 * If TRUE, call an implementation of
110 * \Drupal\Core\Mail\MailInterface->mail() to deliver the message, and
111 * store the result in $message['result']. Modules implementing
112 * hook_mail_alter() may cancel sending by setting $message['send'] to
116 * The $message array structure containing all details of the message. If
117 * already sent ($send = TRUE), then the 'result' element will contain the
118 * success indicator of the email, failure being already written to the
119 * watchdog. (Success means nothing more than the message being accepted at
120 * php-level, which still doesn't guarantee it to be delivered.)
122 public function mail($module, $key, $to, $langcode, $params = [], $reply = NULL, $send = TRUE);