Here are the three safest methods to get this functionality for 1.8.9.
They usually feature an automatic "telly" bridging method where the mod handles the timing of placing blocks and sneaking/unsneaking while the player moves backward [1]. telly bridge mod 1.8.9 download
To download the Telly Bridge mod for Minecraft version 1.8.9, follow these steps: Here are the three safest methods to get