The most customizable status effect mod with over 2³² possible settings combinations! Type '/choosypot' to open the settings menu.
This module is for MC 1.8.9

Video showcase >> https://youtu.be/KZ8bHOAQ-Lg
Automatically messages someone back when you've been AFK for 2-6 mins
This is a fork of xMdb's "AmAFK" module : https://www.chattriggers.com/modules/AmAFK

What's the difference?
You need to manually enter "/afk" every time you go away in order for xMdb's module to work whereas in this case, you're automatically set in "AFK status" if you haven't been moving nor typing chat messages for 3 minutes.

The same story goes for toggling the "AFK status" off : xMdb's module requires you to re-type the command (which you may forget to do when you come back to your keyboard) whereas IdleAFK automatically turns off as soon as you move an inch or type something in chat

What's the automatic message being sent?
"Sorry but I'm currently AFK! (This is an automated message)"
To change it, go to \.minecraft\config\ChatTriggers\modules\IdleAFK\idleAFKmessage.txt and open the idleAFKmessage.txt file using your preferred text editor; Type in your desired message (watch out for character limit! don't make your message too long), save the file and type "/ct reload" in-game to apply changes.