Reason: I have a contact that I know is busy, but still want notifications so he is in "online"-mode and not DND-mode. I want to write "OK" to him, without having to disturb him (having him to open and look in skype to see if it was something important, which it is not).

Question: Is there any way to send a message that won't trigger a notification at the receiver's end? Something like a "silent message".