diff --git a/db/update.sql b/db/update.sql
index 4de4a4e4..93f29e89 100644
--- a/db/update.sql
+++ b/db/update.sql
@@ -1,4 +1,6 @@
 INSERT INTO `Privileges` (`id`, `name`, `desc`) VALUES (40, 'view_rooms', 'User can view rooms');
 INSERT INTO `GroupPrivileges` (`id`, `group_id`, `privilege_id`) VALUES (NULL, '-2', '40');
 
-ALTER TABLE `UserAngelTypes` CHANGE `coordinator` `supporter` BOOLEAN;
\ No newline at end of file
+ALTER TABLE `UserAngelTypes` CHANGE `coordinator` `supporter` BOOLEAN;
+
+ALTER TABLE `User` ADD COLUMN `email_by_human_allowed` BOOLEAN NOT NULL;
\ No newline at end of file
diff --git a/includes/controller/event_config_controller.php b/includes/controller/event_config_controller.php
index a9709d38..4f07fe4c 100644
--- a/includes/controller/event_config_controller.php
+++ b/includes/controller/event_config_controller.php
@@ -19,9 +19,6 @@ function event_config_edit_controller() {
   $teardown_end_date = null;
   
   $event_config = EventConfig();
-  if ($event_config === false) {
-    engelsystem_error('Unable to load event config.');
-  }
   if ($event_config != null) {
     $event_name = $event_config['event_name'];
     $buildup_start_date = $event_config['buildup_start_date'];
diff --git a/includes/model/EventConfig_model.php b/includes/model/EventConfig_model.php
index ac8d5e72..de5073d0 100644
--- a/includes/model/EventConfig_model.php
+++ b/includes/model/EventConfig_model.php
@@ -6,6 +6,7 @@
 function EventConfig() {
   $event_config = sql_select("SELECT * FROM `EventConfig` LIMIT 1");
   if ($event_config === false) {
+    engelsystem_error("Unable to load event config.");
     return false;
   }
   if (count($event_config) > 0) {
diff --git a/includes/model/User_model.php b/includes/model/User_model.php
index 831ebb56..4d7bbb65 100644
--- a/includes/model/User_model.php
+++ b/includes/model/User_model.php
@@ -29,6 +29,7 @@ function User_update($user) {
       `Handy`='" . sql_escape($user['Handy']) . "',
       `email`='" . sql_escape($user['email']) . "',
       `email_shiftinfo`=" . sql_bool($user['email_shiftinfo']) . ",
+      `email_by_human_allowed`=" . sql_bool($user['email_by_human_allowed']) . ",
       `jabber`='" . sql_escape($user['jabber']) . "',
       `Size`='" . sql_escape($user['Size']) . "',
       `Gekommen`='" . sql_escape($user['Gekommen']) . "',
diff --git a/includes/pages/admin_free.php b/includes/pages/admin_free.php
index d3b5b01b..427de61a 100644
--- a/includes/pages/admin_free.php
+++ b/includes/pages/admin_free.php
@@ -67,7 +67,7 @@ function admin_free() {
         'shift_state' => User_shift_state_render($usr),
         'dect' => $usr['DECT'],
         'jabber' => $usr['jabber'],
-        'email' => $usr['email'],
+        'email' => $usr['email_by_human_allowed'] ? $usr['email'] : glyph('eye-close'),
         'actions' => in_array('admin_user', $privileges) ? button(page_link_to('admin_user') . '&id=' . $usr['UID'], _("edit"), 'btn-xs') : '' 
     ];
   }
diff --git a/includes/pages/admin_user.php b/includes/pages/admin_user.php
index ef4eb2de..9b1bc0df 100644
--- a/includes/pages/admin_user.php
+++ b/includes/pages/admin_user.php
@@ -36,8 +36,9 @@ function admin_user() {
     $html .= "  <tr><td>Telefon</td><td>" . "<input type=\"text\" size=\"40\" name=\"eTelefon\" value=\"" . $user_source['Telefon'] . "\"></td></tr>\n";
     $html .= "  <tr><td>Handy</td><td>" . "<input type=\"text\" size=\"40\" name=\"eHandy\" value=\"" . $user_source['Handy'] . "\"></td></tr>\n";
     $html .= "  <tr><td>DECT</td><td>" . "<input type=\"text\" size=\"4\" name=\"eDECT\" value=\"" . $user_source['DECT'] . "\"></td></tr>\n";
-    $html .= "  <tr><td>email</td><td>" . "<input type=\"text\" size=\"40\" name=\"eemail\" value=\"" . $user_source['email'] . "\"></td></tr>\n";
-    $html .= "<tr><td>" . form_checkbox('email_shiftinfo', _("Please send me an email if my shifts change"), $user_source['email_shiftinfo']) . "</td></tr>\n";
+    if ($user_source['email_by_human_allowed']) {
+      $html .= "  <tr><td>email</td><td>" . "<input type=\"text\" size=\"40\" name=\"eemail\" value=\"" . $user_source['email'] . "\"></td></tr>\n";
+    }
     $html .= "  <tr><td>jabber</td><td>" . "<input type=\"text\" size=\"40\" name=\"ejabber\" value=\"" . $user_source['jabber'] . "\"></td></tr>\n";
     $html .= "  <tr><td>Size</td><td>" . html_select_key('size', 'eSize', $tshirt_sizes, $user_source['Size']) . "</td></tr>\n";
     
@@ -173,7 +174,6 @@ function admin_user() {
               `Alter` = '" . sql_escape($_POST["eAlter"]) . "', 
               `DECT` = '" . sql_escape($_POST["eDECT"]) . "', 
               `email` = '" . sql_escape($_POST["eemail"]) . "', 
-              `email_shiftinfo` = " . sql_bool(isset($_REQUEST['email_shiftinfo'])) . ", 
               `jabber` = '" . sql_escape($_POST["ejabber"]) . "', 
               `Size` = '" . sql_escape($_POST["eSize"]) . "', 
               `Gekommen`= '" . sql_escape($_POST["eGekommen"]) . "', 
diff --git a/includes/pages/guest_login.php b/includes/pages/guest_login.php
index 7420e7fb..b30e3d15 100644
--- a/includes/pages/guest_login.php
+++ b/includes/pages/guest_login.php
@@ -17,9 +17,6 @@ function guest_register() {
   global $tshirt_sizes, $enable_tshirt_size, $default_theme, $user;
   
   $event_config = EventConfig();
-  if ($event_config === false) {
-    engelsystem_error("Unable to load event config.");
-  }
   
   $msg = "";
   $nick = "";
@@ -31,6 +28,7 @@ function guest_register() {
   $mobile = "";
   $mail = "";
   $email_shiftinfo = false;
+  $email_by_human_allowed = false;
   $jabber = "";
   $hometown = "";
   $comment = "";
@@ -39,7 +37,7 @@ function guest_register() {
   $selected_angel_types = [];
   $planned_arrival_date = null;
   
-  $angel_types_source = sql_select("SELECT * FROM `AngelTypes` ORDER BY `name`");
+  $angel_types_source = AngelTypes();
   $angel_types = [];
   foreach ($angel_types_source as $angel_type) {
     $angel_types[$angel_type['id']] = $angel_type['name'] . ($angel_type['restricted'] ? " (restricted)" : "");
@@ -77,6 +75,10 @@ function guest_register() {
       $email_shiftinfo = true;
     }
     
+    if (isset($_REQUEST['email_by_human_allowed'])) {
+      $email_by_human_allowed = true;
+    }
+    
     if (isset($_REQUEST['jabber']) && strlen(strip_request_item('jabber')) > 0) {
       $jabber = strip_request_item('jabber');
       if (! check_email($jabber)) {
@@ -157,6 +159,7 @@ function guest_register() {
           `Handy`='" . sql_escape($mobile) . "', 
           `email`='" . sql_escape($mail) . "', 
           `email_shiftinfo`=" . sql_bool($email_shiftinfo) . ", 
+          `email_by_human_allowed`=" . sql_bool($email_by_human_allowed) . ",
           `jabber`='" . sql_escape($jabber) . "',
           `Size`='" . sql_escape($tshirt_size) . "', 
           `Passwort`='" . sql_escape($password_hash) . "', 
@@ -209,7 +212,8 @@ function guest_register() {
                       ]),
                       div('col-sm-8', [
                           form_email('mail', _("E-Mail") . ' ' . entry_required(), $mail),
-                          form_checkbox('email_shiftinfo', _("Please send me an email if my shifts change"), $email_shiftinfo) 
+                          form_checkbox('email_shiftinfo', _("The engelsystem is allowed to send me an email (e.g. when my shifts change)"), $email_shiftinfo), 
+                          form_checkbox('email_by_human_allowed', _("Humans are allowed to send me an email (e.g. for ticket vouchers)"), $email_by_human_allowed) 
                       ]) 
                   ]),
                   div('row', [
@@ -318,9 +322,6 @@ function guest_login() {
   }
   
   $event_config = EventConfig();
-  if ($event_config === false) {
-    engelsystem_error("Unable to load event config.");
-  }
   
   return page([
       div('col-md-12', [
diff --git a/includes/pages/user_settings.php b/includes/pages/user_settings.php
index 22ead68b..b92f7bd3 100644
--- a/includes/pages/user_settings.php
+++ b/includes/pages/user_settings.php
@@ -18,6 +18,7 @@ function user_settings() {
   $mobile = $user['Handy'];
   $mail = $user['email'];
   $email_shiftinfo = $user['email_shiftinfo'];
+  $email_by_human_allowed = $user['email_by_human_allowed'];
   $jabber = $user['jabber'];
   $hometown = $user['Hometown'];
   $tshirt_size = $user['Size'];
@@ -39,8 +40,9 @@ function user_settings() {
       $valid = false;
       $msg .= error(_("Please enter your e-mail."), true);
     }
-    
+
     $email_shiftinfo = isset($_REQUEST['email_shiftinfo']);
+    $email_by_human_allowed = isset($_REQUEST['email_by_human_allowed']);
     
     if (isset($_REQUEST['jabber']) && strlen(strip_request_item('jabber')) > 0) {
       $jabber = strip_request_item('jabber');
@@ -109,6 +111,7 @@ function user_settings() {
           `Handy`='" . sql_escape($mobile) . "',
           `email`='" . sql_escape($mail) . "',
           `email_shiftinfo`=" . sql_bool($email_shiftinfo) . ",
+          `email_by_human_allowed`=" . sql_bool($email_by_human_allowed) . ",
           `jabber`='" . sql_escape($jabber) . "',
           `Size`='" . sql_escape($tshirt_size) . "',
           `Hometown`='" . sql_escape($hometown) . "',
@@ -185,7 +188,8 @@ function user_settings() {
                   form_text('dect', _("DECT"), $dect),
                   form_text('mobile', _("Mobile"), $mobile),
                   form_text('mail', _("E-Mail") . ' ' . entry_required(), $mail),
-                  form_checkbox('email_shiftinfo', _("Please send me an email if my shifts change"), $email_shiftinfo),
+                  form_checkbox('email_shiftinfo', _("The engelsystem is allowed to send me an email (e.g. when my shifts change)"), $email_shiftinfo),
+                  form_checkbox('email_by_human_allowed', _("Humans are allowed to send me an email (e.g. for ticket vouchers)"), $email_by_human_allowed),
                   form_text('jabber', _("Jabber"), $jabber),
                   form_text('hometown', _("Hometown"), $hometown),
                   $enable_tshirt_size ? form_select('tshirt_size', _("Shirt size"), $tshirt_sizes, $tshirt_size) : '',
diff --git a/public/index.php b/public/index.php
index e1af1000..7bf9b169 100644
--- a/public/index.php
+++ b/public/index.php
@@ -161,9 +161,6 @@ if (isset($_REQUEST['p']) && preg_match("/^[a-z0-9_]*$/i", $_REQUEST['p']) && (i
 }
 
 $event_config = EventConfig();
-if ($event_config === false) {
-  engelsystem_error("Unable to load event config.");
-}
 
 echo template_render('../templates/layout.html', [
     'theme' => isset($user) ? $user['color'] : $default_theme,