这是一个奇怪的“特征”。该功能实际上在WordPress内部可用（WordPress.com为其托管博客服务启用了该功能），但仅限于多站点。如果你进去看看/wp-admin/includes/ms.php 您将找到处理此问题的函数-第239行send_confirmation_on_profile_email().

大概，您可以将此函数移到您的函数中。php或插件来获得此功能，可能需要稍加调整才能使其正常工作。它没有回答“为什么”，但trac也没有回答这个问题here.

ETA：进一步研究，您可能还需要复制一些其他功能-new_user_email_admin_notice() 和update_option_new_admin_email() 可能需要时跳出。

Giri的反应对我不起作用。我不得不调整我的手机使其正常工作（Wordpress 3.5）

function cleanup_verify_email_change()
{
    global $errors, $wpdb;
    $current_user = wp_get_current_user();

    // don\'t execute this if they\'re trying to dismiss a pending email change
    if (in_array($GLOBALS[\'pagenow\'], array(\'profile.php\')) && $current_user->ID > 0 & !isset($_GET["dismiss"])) 
    {
        if (isset( $_POST[ \'email\' ] ) && ($current_user->user_email != $_POST[\'email\']) ) 
        {
            $user->ID = $current_user->ID;
            $user->user_email = esc_html( trim( $_POST[ \'email\' ] ) );

            if ( $wpdb->get_var( $wpdb->prepare( "SELECT user_login FROM {$wpdb->users} WHERE user_login = %s", $current_user->user_login ) ) ) {
                $wpdb->query( $wpdb->prepare( "UPDATE {$wpdb->users} SET user_email = %s WHERE user_login = %s", $user->user_email, $current_user->user_login ) );
            }

            wp_update_user( get_object_vars( $user ) );

            wp_redirect( add_query_arg( array(\'updated\' => \'true\', \'multisite_cleanup\' => \'true\'), self_admin_url( \'profile.php\' ) ) );
            die();
        } 
        elseif ( !empty( $_GET[\'dismiss\'] ) && $current_user->ID . \'_new_email\' == $_GET[\'dismiss\'] ) 
        {
            delete_user_meta( $current_user->ID . \'_new_email\' );
            wp_redirect( add_query_arg( array(\'updated\' => \'true\', \'multisite_cleanup\' => \'true\'), self_admin_url( \'profile.php\' ) ) );
            die();
        }
    }
}
add_action(\'plugins_loaded\',\'cleanup_verify_email_change\');

我已经调整了Giri代码，以便它可以在我的wordpress（版本4.8.1+）上运行

之前：

 update_user_meta( $current_user->ID . \'_new_email\', $new_user_email );

 update_user_meta( $current_user->ID, \'_new_email\', $new_user_email );

此外：

$new_email[\'hash\'];
$new_email[\'newemail\'];

$new_email[0][\'hash\'];
$new_email[0][\'newemail\'];

function custom_send_confirmation_on_profile_email() {
    global $errors, $wpdb;
    $current_user = wp_get_current_user();
    if ( ! is_object($errors) )
        $errors = new WP_Error();

    if ( $current_user->ID != $_POST[\'user_id\'] )
        return false;

    if ( $current_user->user_email != $_POST[\'email\'] ) {
        if ( !is_email( $_POST[\'email\'] ) ) {
            $errors->add( \'user_email\', __( "<strong>ERROR</strong>: The e-mail address isn\'t correct." ), array( \'form-field\' => \'email\' ) );
            return;
        }

        if ( email_exists( $_POST[\'email\'] ) ) {
            $errors->add( \'user_email\', __( "<strong>ERROR</strong>: The e-mail address is already used." ), array( \'form-field\' => \'email\' ) );
            delete_user_meta( $current_user->ID, \'_new_email\' );
            return;
        }

        $hash = md5( $_POST[\'email\'] . time() . mt_rand() );
        $new_user_email = array(
            \'hash\' => $hash,
            \'newemail\' => $_POST[\'email\']
        );
        update_user_meta( $current_user->ID, \'_new_email\', $new_user_email );

        $content = apply_filters( \'new_user_email_content\', __( "Dear user,

        You recently requested to have the email address on your account changed.
        If this is correct, please click on the following link to change it:
        ###ADMIN_URL###

        You can safely ignore and delete this email if you do not want to
        take this action.

        This email has been sent to ###EMAIL###

        Regards,
        All at ###SITENAME###
        ###SITEURL###" ), $new_user_email );

        $content = str_replace( \'###ADMIN_URL###\', esc_url( admin_url( \'profile.php?newuseremail=\'.$hash ) ), $content );
        $content = str_replace( \'###EMAIL###\', $_POST[\'email\'], $content);
        $content = str_replace( \'###SITENAME###\', get_site_option( \'site_name\' ), $content );
        $content = str_replace( \'###SITEURL###\', home_url(), $content );

        wp_mail( $_POST[\'email\'], sprintf( __( \'[%s] New Email Address\' ), get_option( \'blogname\' ) ), $content );
        $_POST[\'email\'] = $current_user->user_email;
    }
}
add_action( \'personal_options_update\', \'custom_send_confirmation_on_profile_email\' );

// Execute confirmed email change. See send_confirmation_on_profile_email().
function verify_email_change(){
    global $errors, $wpdb;
    $current_user = wp_get_current_user();
    if (in_array($GLOBALS[\'pagenow\'], array(\'profile.php\')) && $current_user->ID > 0) {
        if (isset( $_GET[ \'newuseremail\' ] ) && $current_user->ID ) {
            $new_email = get_user_meta( $current_user->ID, \'_new_email\' );
            if ( $new_email[0][\'hash\'] == $_GET[ \'newuseremail\' ] ) {
                $user->ID = $current_user->ID;
                $user->user_email = esc_html( trim( $new_email[0][ \'newemail\' ] ) );
                if ( $wpdb->get_var( $wpdb->prepare( "SELECT user_login FROM {$wpdb->users} WHERE user_login = %s", $current_user->user_login ) ) )
                    $wpdb->query( $wpdb->prepare( "UPDATE {$wpdb->users} SET user_email = %s WHERE user_login = %s", $user->user_email, $current_user->user_login ) );
                wp_update_user( get_object_vars( $user ) );
                delete_user_meta( $current_user->ID, \'_new_email\' );
                wp_redirect( add_query_arg( array(\'updated\' => \'true\'), self_admin_url( \'profile.php\' ) ) );
                die();
            }
        } elseif ( !empty( $_GET[\'dismiss\'] ) && $current_user->ID . \'_new_email\' == $_GET[\'dismiss\'] ) {
            delete_user_meta( $current_user->ID, \'_new_email\' );
            wp_redirect( add_query_arg( array(\'updated\' => \'true\'), self_admin_url( \'profile.php\' ) ) );
            die();
        }
    }
}
add_action(\'after_setup_theme\',\'verify_email_change\');