this IS my first time decoding something, so i apologize if it's difficult to understand.
also, I have no idea if someone else has decoded this already.
''STOP WHAT YOU ARE DOING. DO NOT MOVE. I AM ACROSS THE STREET BUT I CAN SEE THE BACK OF YOUR HEAD THROUGH THE GLASS. I KNOW WHAT YOU LET HAPPEN LAST SUMMER. YOU THINK YOU ARE SAFE BECAUSE THE DEAD OLT IS TURNED UT(?) I WAS HERE BEFORE YOU EVEN CAME HOME. I AM BREATHING THE SAME AIR YOU ARE. IT IS SO THICK IN HERE, ISN'T IT? LIKE THE AIR IS WEIGHTED WITH SOMETHING OLD. SOMETHING FULLED FROM DEEP UNDER THE HILLS. OH, SWEET OLD APPALACHIA, HOW I LOVE YOUR MOUNTAINS SO.
IF YOU WANT TO STAY ALIVE YOU NEED TO WALK TO THE KITCHEN. DO NOT LOOK INTO THE SHADOWS OF THE HALLWAY. DO NOT THINK ABOUT THE CRAWLSPACE. GO TO THE SINK AND FILL A GLASS. LET IT RUN UNTIL THE BOTTOM OF THE GLASS LOOKS LIKE OVAL DUST. LEAVE IT ON THE TABLE. IT'S THE SAME THING THAT TOOK THE COLOR OUT OF THE RO YS IN THE REEY(?). IT'S THE SAME THING THAT'S SAYING THE NEIGHBOR'S DOG STOP BARKING. LEAVE THE GLASS AND GO AWAY TO YOUR ROOM. DO NOT LOOK BEHIND YOU. IF YOU TURN AROUND YOU WILL SEE WHAT THE RUNOFF HAS DONE TO YOUR SKIN. YOU WILL SEE THE LA Y SLUDGE WEEPING FROM YOUR EYES AND IT WILL BE THE LAST THING YOU EVER SEE.
TELL NO ONE. THE POLICE WON'T GO THIS FAR UP THE HOLLOW. THEY KNOW WHAT'S IN THE GROUND. I AM UNDER THE FLOOR BOARDS YET I CAN HEAR YOUR HEART IT SOUNDS LIKE A HARE IN A DARK TUNNEL''
feel free to make up your own theories about this email because I have no idea what's going on;;