Prevent Facebook from sending the message Seen By or Read Receipt in Chatbox
Like it or not, Facebook launched a feature some time ago – Read Receipts, which shows all your friends when you read their Facebook chat messages by posting a Seen By message. This function prevented you from ignoring your messages and forced you to reply.
While helping senders to know if the person to whom they sent the message read it and responded in time, it frustrates the recipients on the other side of the fence. Sometimes they did not want to show that they had read the message. To solve this problem, a company called CrossRider had developed a unique solution – a browser plugin called Chat Undetected.