diff --git a/exchangelib/items.py b/exchangelib/items.py
index 8462417..b1bd3dc 100644
--- a/exchangelib/items.py
+++ b/exchangelib/items.py
@@ -288,11 +288,9 @@ def _create(self, message_disposition, send_meeting_invitations):
         res = self.account.bulk_create(
             items=[self], folder=self.folder, message_disposition=message_disposition,
             send_meeting_invitations=send_meeting_invitations)
-        if message_disposition in (SEND_ONLY, SEND_AND_SAVE_COPY):
-            if res:
-                raise ValueError('Got a response in non-save mode')
+        if not res:
             return None
-        if len(res) != 1:
+        if len(res) > 1:
             raise ValueError('Expected result length 1, but got %s' % res)
         if isinstance(res[0], Exception):
             raise res[0]
@@ -713,10 +711,7 @@ def send(self, save_copy=True, copy_to_folder=None, conflict_resolution=AUTO_RES
                                send_meeting_invitations=send_meeting_invitations)
             return None
 
-        res = self._create(message_disposition=SEND_ONLY, send_meeting_invitations=send_meeting_invitations)
-        if res:
-            raise ValueError('Unexpected response in send-only mode')
-        return None
+        return self._create(message_disposition=SEND_ONLY, send_meeting_invitations=send_meeting_invitations)
 
     def send_and_save(self, update_fields=None, conflict_resolution=AUTO_RESOLVE,
                       send_meeting_invitations=SEND_TO_NONE):
@@ -737,12 +732,10 @@ def send_and_save(self, update_fields=None, conflict_resolution=AUTO_RESOLVE,
                 self.send(save_copy=False, conflict_resolution=conflict_resolution,
                           send_meeting_invitations=send_meeting_invitations)
             else:
-                res = self._create(
+                return self._create(
                     message_disposition=SEND_AND_SAVE_COPY,
                     send_meeting_invitations=send_meeting_invitations
                 )
-                if res:
-                    raise ValueError('Unexpected response in send-only mode')
 
     def reply(self, subject, body, to_recipients=None, cc_recipients=None, bcc_recipients=None):
         if not self.account: