diff --git a/src/mailer.js b/src/mailer.js
index 8c6131dc3..ec050b8c6 100644
--- a/src/mailer.js
+++ b/src/mailer.js
@@ -1,5 +1,3 @@
-/* jslint node: true */
-
 'use strict';
 
 exports = module.exports = {
@@ -200,6 +198,8 @@ function getAdminEmails(callback) {
     users.getAllAdmins(function (error, admins) {
         if (error) return callback(error);
 
+        if (admins.length === 0) return callback(new Error('No admins on this cloudron')); // box not activated yet
+
         var adminEmails = [ ];
         admins.forEach(function (admin) { adminEmails.push(admin.email); });