给出的答案都是善意的。但都不好。过滤器函数调用有更多参数，确切地说是4个。

这对我的邮件有效（我想用用户电子邮件替换用户名）

注意，我们有一个多站点页面。您可能希望将network\\u site\\u url替换为get_site_url()

通常在您的functions.php 您的文字按时间：

add_filter("retrieve_password_message", "mapp_custom_password_reset", 99, 4);

function mapp_custom_password_reset($message, $key, $user_login, $user_data )    {

  $message = "Someone has requested a password reset for the following account:

" . sprintf(__(\'%s\'), $user_data->user_email) . "

If this was a mistake, just ignore this email and nothing will happen.

To reset your password, visit the following address:

" .  \'<\' . network_site_url("wp-login.php?action=rp&key=$key&login=" . rawurlencode($user_login), \'login\') . ">\\r\\n" . "

If you have any further issues, please email us to help@myapp.com

The Myapp Team";


  return $message;

}

add_filter( \'retrieve_password_title\',
  function( $title )
  {
    $title = __( \'Password reset for myapp.org\' );
    return $title;
  }
);

我认为这段代码可能对任何想要定制重置密码电子邮件的人都有帮助。

//* Password reset activation E-mail -> Body
add_filter( \'retrieve_password_message\', \'wpse_retrieve_password_message\', 10, 2 );
function wpse_retrieve_password_message( $message, $key ){
    $user_data = \'\';
    // If no value is posted, return false
    if( ! isset( $_POST[\'user_login\'] )  ){
            return \'\';
    }
    // Fetch user information from user_login
    if ( strpos( $_POST[\'user_login\'], \'@\' ) ) {

        $user_data = get_user_by( \'email\', trim( $_POST[\'user_login\'] ) );
    } else {
        $login = trim($_POST[\'user_login\']);
        $user_data = get_user_by(\'login\', $login);
    }
    if( ! $user_data  ){
        return \'\';
    }
    $user_login = $user_data->user_login;
    $user_email = $user_data->user_email;
    // Setting up message for retrieve password
    $message = "Looks like you want to reset your password!\\n\\n";
    $message .= "Please click on this link:\\n";
    $message .= \'<a href="\';
    $message .= network_site_url("wp-login.php?action=rp&key=$key&login=" . rawurlencode($user_login), \'login\');
    $message .= \'">"\';
    $message .= network_site_url("wp-login.php?action=rp&key=$key&login=" . rawurlencode($user_login), \'login\');
    $message .= \'"</a>\\n\\n"\';
    $message .= \'Kind Regards,<br/>Dream Team\';
    // Return completed message for retrieve password
    return $message;
}

add_filter("retrieve_password_message", "your_custom_message", 99, 2);

  function your_custom_message($message, $key)    {

  $message = "your_custom_message";

  return $message;

}

这是为了覆盖某人在检索密码时获取的电子邮件正文。