diff --git a/OSC/Source/OSC/Private/Common/OscFunctionLibrary.h b/OSC/Source/OSC/Private/Common/OscFunctionLibrary.h
index fb192c9..8187cd6 100644
--- a/OSC/Source/OSC/Private/Common/OscFunctionLibrary.h
+++ b/OSC/Source/OSC/Private/Common/OscFunctionLibrary.h
@@ -47,7 +47,7 @@ class UOscFunctionLibrary : public UBlueprintFunctionLibrary
      *  @brief Send an OSC message.
      *  @param Address OSC address.
      *  @param Data result of successive PushFloat/Int/String/etc.
-     *  @param Index index of the destination. (SendTarget list of the plugin settings)
+     *  @param Index index of the destination, -1 for all destinations. (SendTarget list of the plugin settings)
      */
     UFUNCTION(BlueprintCallable, Category=OSC)
     static void SendOsc(const FString & Address, const FOscDataStruct & Data, int32 TargetIndex);
diff --git a/OSC/Source/OSC/Private/OscSettings.cpp b/OSC/Source/OSC/Private/OscSettings.cpp
index 4b2d240..4210b42 100644
--- a/OSC/Source/OSC/Private/OscSettings.cpp
+++ b/OSC/Source/OSC/Private/OscSettings.cpp
@@ -38,19 +38,32 @@ void UOscSettings::UpdateSendAddresses()
     }
 }
 
+static void SendImpl(FSocket *socket, const uint8 *buffer, int32 length, const FInternetAddr & target)
+{
+    int32 bytesSent = 0;
+    while(length > 0)
+    {
+        socket->SendTo(buffer, length, bytesSent, target);
+        length -= bytesSent;
+        buffer += bytesSent;
+    }
+}
+
 void UOscSettings::Send(const uint8 *buffer, int32 length, int32 targetIndex)
 {
-    if(targetIndex < _sendAddresses.Num())
+    if(targetIndex == -1)
     {
-        int32 bytesSent = 0;
-        while(length > 0)
+        for(const auto & address : _sendAddresses)
         {
-            _sendSocket->SendTo(buffer, length, bytesSent, *_sendAddresses[targetIndex].second);
-            length -= bytesSent;
-            buffer += bytesSent;
+            SendImpl(&_sendSocket.Get(), buffer, length, *address.second);
         }
         UE_LOG(LogOSC, Verbose, TEXT("OSC sent"));
     }
+    else if(targetIndex < _sendAddresses.Num())
+    {
+        SendImpl(&_sendSocket.Get(), buffer, length, *_sendAddresses[targetIndex].second);
+        UE_LOG(LogOSC, Verbose, TEXT("OSC sent"));
+    }
     else
     {
         UE_LOG(LogOSC, Warning, TEXT("Cannot send OSC: invalid targetIndex %d"), targetIndex);