>I get that you appreciated what I sent you but if your reply isn't going to affect anything, don't respond. I often reply to non actionable emails/IMs with a

>I get that you appreciated what I sent you but if your reply isn't going to affect anything, don't respond. I often reply to non actionable emails/IMs with a thumbs up emoji indicating that I have read the message and have nothing to add. This means the other side know they don't have to try to contact me again because I have seen it.