Ticket #59250: patch.2.diff

wp-admin/includes/misc.php

@@ -1531 +1531 @@
                 $site_title = parse_url( home_url(), PHP_URL_HOST );
         }
 
-        wp_mail(
-                $value,
-                sprintf(
-                        /* translators: New admin email address notification email subject. %s: Site title. */
-                        __( '[%s] New Admin Email Address' ),
-                        $site_title
-                ),
-                $content
-        );
+    $subject = sprintf(
+    /* translators: New admin email address notification email subject. %s: Site title. */
+        __( '[%s] New Admin Email Address' ),
+        $site_title
+    );
+    $subject = apply_filters( 'new_admin_email_subject', $subject );
 
+    wp_mail(
+        $value,
+        $subject,
+        $content
+    );
+
         if ( $switched_locale ) {
                 restore_previous_locale();
         }