diff --git a/janine/janine.py b/janine/janine.py
index d1b54f0..d7c4291 100644
--- a/janine/janine.py
+++ b/janine/janine.py
@@ -80,7 +80,7 @@ def to_warning(data):
                     sender=info.get('senderName', 'N/A'),
                     headline=info['headline'],
                     description=info['description'],
-                    instruction=info.get('instruction', 'N/A'),
+                    instruction=info.get('instruction', ''),
                     landkreise=get_landkreise(data))
 
 def get_landkreise(data):
@@ -189,6 +189,10 @@ class WarningBot:
         if not self.__is_message_valid(msg):
             return
 
+        # Send a deliverability receipt
+        receipt = aioxmpp.mdr.compose_receipt(msg)
+        self._client.enqueue(receipt)
+
         cmd_parts = str(msg.body.any()).split(' ')
         cmd = cmd_parts[0].lower()
 
@@ -304,15 +308,15 @@ help - Gebe diese Hilfe aus'''
             if warning.id in ids:
                 continue
 
-            if len(set(warning.landkreise).intersection(self._warn_clients.keys())):
+            # We need to use a set as a warning can apply to more than one
+            # Landkreis
+            if set(warning.landkreise).intersection(self._warn_clients.keys()):
                 body = format_warning(warning)
                 for landkreis in warning.landkreise:
                     for to in self._warn_clients.get(landkreis, []):
-                        msg = aioxmpp.stanza.Message(
-                            to=aioxmpp.JID.fromstr(to),
-                            type_=aioxmpp.MessageType.CHAT)
-                        msg.body[None] = body
-                        await self._client.send(msg)
+                        await self._client.send(make_msg(
+                            aioxmpp.JID.fromstr(to),
+                            body))
 
     def _load_config(self, config_file):
         # Load config
@@ -332,6 +336,11 @@ help - Gebe diese Hilfe aus'''
             with open(self._client_store, 'r') as clients_file:
                 self._warn_clients = json.loads(clients_file.read())
             log.info('Clients read from disk')
+        else:
+            with open(self._client_store, 'w') as clients_file:
+                clients_file.write('{}')
+            os.chmod(self._client_store, S_IRUSR | S_IWUSR)
+            log.info('Clients file created with 0600')
         
         ## Warnings
         self._warnings_file = os.path.join(self._data_dir, 'warnings.json')
diff --git a/janine/utils.py b/janine/utils.py
index 9306dc4..8ef4fb8 100644
--- a/janine/utils.py
+++ b/janine/utils.py
@@ -54,6 +54,11 @@ def format_warning(warning):
 
 {warning.description}'''
 
+    if warning.instruction:
+        body = f'''{body}
+
+{warning.instruction}'''
+
     # Smells like script injection, but okay
     body = body.replace('<br>', '\n')
     body = body.replace('<br/>', '\n')