And this plugin already exists: https://wrobot.eu/files/file/359-whisper-reply/
And about Warmane detection, how I told and some private discutions, for the moment, I found nothing to confirm than Warmane detect WRobot, and I do not think that WRobot is detected, I think more about DB queries (VPN IPs, time in game, number of farms/fishings/mobs killed/accounts/quests/...) or traps (tp, mob spawn, freeze, ... but this automaticly? I read somewhere than Warmane have write few years ago antibot bot?). When I bot 1 or 2 hours per days, with my IP (real IP), my account still alive (I monitoring, sometime players (or GM?) talks to me). But I could be wrong and WRobot is really detected. But I work on it.
If anyone has more info about Warmane or saw something strange (when he played manually or with the bot) he does not hesitate to tell me.