diff --git a/setup/agreement.py b/setup/agreement.py
new file mode 100644
index 00000000..45c9612d
--- /dev/null
+++ b/setup/agreement.py
@@ -0,0 +1,45 @@
+import sys
+import rtyaml
+import collections
+import os.path
+
+def load_environment():
+	# Load settings from a KEY=VALUE file.
+    import collections
+    env = collections.OrderedDict()
+    for line in open("/etc/mailinabox.conf"): env.setdefault(*line.strip().split("=", 1))
+    return env
+
+def write_settings(config, env):
+    fn = os.path.join(env['STORAGE_ROOT'], 'settings.yaml')
+    with open(fn, "w") as f:
+        f.write(rtyaml.dump(config))
+
+def load_settings(env):
+    fn = os.path.join(env['STORAGE_ROOT'], 'settings.yaml')
+    try:
+        config = rtyaml.load(open(fn, "r"))
+        if not isinstance(config, dict): raise ValueError() # caught below
+        return config
+    except:
+        return { }
+
+env = load_environment()
+
+if(sys.argv[2]):
+
+	if( sys.argv[1] == "check" ):
+		yaml = rtyaml.load(open( os.path.join(env['STORAGE_ROOT'], 'settings.yaml') ))
+
+		if( yaml.get("mailinabox-agreement", True) ):
+			print("true")
+		else:
+			print("false")
+
+
+	elif( sys.argv[1] == "set" ):
+		config = load_settings(env)
+
+		config["mailinabox-agreement"] = True
+		write_settings( config, env )
+		print("true")
\ No newline at end of file
diff --git a/setup/functions.sh b/setup/functions.sh
index 1a74edfd..bc4abb8d 100644
--- a/setup/functions.sh
+++ b/setup/functions.sh
@@ -223,3 +223,66 @@ function git_clone {
 	mv $TMPPATH/$SUBDIR $TARGETPATH
 	rm -rf $TMPPATH
 }
+
+function set_storage_user {
+	# Set STORAGE_USER to default values ( user-data ), unless
+	# we've already got those values from a previous run.
+	if [ -z "${STORAGE_USER:-}" ]; then
+		STORAGE_USER=$([[ -z "${DEFAULT_STORAGE_USER:-}" ]] && echo "user-data" || echo "$DEFAULT_STORAGE_USER")
+	fi
+}
+
+function set_storage_root {
+	# Set STORAGE_ROOT to default values ( /home/user-data ), unless
+	# we've already got those values from a previous run.
+	if [ -z "${STORAGE_USER:-}" ]; then
+		STORAGE_USER=$([[ -z "${DEFAULT_STORAGE_USER:-}" ]] && echo "user-data" || echo "$DEFAULT_STORAGE_USER")
+	fi
+	if [ -z "${STORAGE_ROOT:-}" ]; then
+		STORAGE_ROOT=$([[ -z "${DEFAULT_STORAGE_ROOT:-}" ]] && echo "/home/$STORAGE_USER" || echo "$DEFAULT_STORAGE_ROOT")
+	fi
+}
+
+function check_config_agreed {
+	set_storage_user;
+	set_storage_root;
+
+	if [ -z "${I_AGREE_MAILINABOX:-}" ]; then
+		if [ ! -d $STORAGE_ROOT ]; then
+			return 1
+		fi
+		if [ ! -f $STORAGE_ROOT/settings.yaml ]; then
+			return 1
+		fi
+		local current_directory="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
+		local yaml_agreed=$(python check "${current_directory}"/checkagree.py "${STORAGE_ROOT}/settings.yaml")
+		if [ "$yaml_agreed" -eq "true"]; then
+			return 0
+		fi
+		return 1
+	else
+		return 0
+	fi
+}
+
+function set_config_agreed {
+	set_storage_user;
+	set_storage_root;
+
+	if [ -z "${I_AGREE_MAILINABOX:-}" ]; then
+		if [ ! -d $STORAGE_ROOT ]; then
+			return 1
+		fi
+		if [ ! -f $STORAGE_ROOT/settings.yaml ]; then
+			return 1
+		fi
+		local current_directory="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
+		local yaml_agreed=$(python set "${current_directory}"/checkagree.py "${STORAGE_ROOT}/settings.yaml")
+		if [ "$yaml_agreed" -eq "true"]; then
+			return 0
+		fi
+		return 1
+	else
+		return 0
+	fi
+}
\ No newline at end of file
diff --git a/setup/questions.sh b/setup/questions.sh
index bf382f49..d7c2f3c6 100644
--- a/setup/questions.sh
+++ b/setup/questions.sh
@@ -22,6 +22,46 @@ if [ -z "${NONINTERACTIVE:-}" ]; then
 		\n\nI'm going to ask you a few questions.
 		\n\nTo change your answers later, just run 'sudo mailinabox' from the command line.
 		\n\nNOTE: You should only install this on a brand new Ubuntu installation 100% dedicated to Mail-in-a-Box. Mail-in-a-Box will, for example, remove apache2."
+	
+	if [ -z "${I_AGREE_MAILINABOX:-}" ]; then
+
+		local config_agreed=$( check_config_agreed && echo "true" || echo "false")
+
+		if [ "$config_agreed" -eq "false"]; then
+
+			#makes sure the user is aware of our legal stuff.
+			message_box "Mail-in-a-Box Legal Notice" \
+				"Mail-in-a-Box, and/or its developers do not take any legal liability and/or responsibility for installations or this software.
+				\n\nPlease know this software is provided 'as-is', and users should not have any expectations from it.
+				\n\nBy installing this software, you may be automaticaly agreed to certain agreements, which you will still be legally held accountable for.
+				The legal agreements you will be automatically agreed to may include (but not limited to):
+				\n\n * Let's Encrypt Terms of Service.
+				\n\nBy continuing this installation, you agree to be legally accountable to research, read, understand and agree to any potential agreements this software
+				automatically agrees you to, or any agreements related to this software (including but not limited to: the Creative Commons Zero license in its Github
+				repository).
+				\n\nYou usually can discontinue installing this software by hitting 'ctrl + C'.
+				"
+		fi
+	fi
+
+	I_AGREE_MAILINABOX=$(/bin/true)
+else
+
+	local config_agreed=$( check_config_agreed && echo "true" || echo "false")
+
+	if [ "$config_agreed" -eq "true"]; then
+		I_AGREE_MAILINABOX=$(/bin/true)
+	fi
+
+	#This is so a user can programmatically agree to our legal notice
+	if [ -z "${I_AGREE_MAILINABOX:-}" ]; then
+		echo "ERROR: You must agree to Mail-in-a-Box's Legal Notice. You can either:"
+		echo "run this in interactive mode; or"
+		echo "set I_AGREE_MAILINABOX variable before running."
+		exit 1;
+	fi
+
+	I_AGREE_MAILINABOX=$(/bin/true)
 fi
 
 # The box needs a name.
@@ -184,14 +224,8 @@ if [ "$PRIMARY_HOSTNAME" = "auto" ]; then
 	PRIMARY_HOSTNAME=$(get_default_hostname)
 fi
 
-# Set STORAGE_USER and STORAGE_ROOT to default values (user-data and /home/user-data), unless
-# we've already got those values from a previous run.
-if [ -z "${STORAGE_USER:-}" ]; then
-	STORAGE_USER=$([[ -z "${DEFAULT_STORAGE_USER:-}" ]] && echo "user-data" || echo "$DEFAULT_STORAGE_USER")
-fi
-if [ -z "${STORAGE_ROOT:-}" ]; then
-	STORAGE_ROOT=$([[ -z "${DEFAULT_STORAGE_ROOT:-}" ]] && echo "/home/$STORAGE_USER" || echo "$DEFAULT_STORAGE_ROOT")
-fi
+set_storage_user;
+set_storage_root;
 
 # Show the configuration, since the user may have not entered it manually.
 echo
diff --git a/setup/start.sh b/setup/start.sh
index 0b145022..3794363a 100755
--- a/setup/start.sh
+++ b/setup/start.sh
@@ -57,6 +57,15 @@ chmod +x /usr/local/bin/mailinabox
 # STORAGE_ROOT.
 source setup/questions.sh
 
+if [ -z "${I_AGREE_MAILINABOX:-}" ]; then
+	echo "ERROR: You must agree to Mail-in-a-Box's Legal Notice. You can either:"
+	echo "run this in interactive mode; or"
+	echo "set I_AGREE_MAILINABOX variable before running."
+	exit 1;
+else
+	set_config_agreed;
+fi
+
 # Run some network checks to make sure setup on this machine makes sense.
 # Skip on existing installs since we don't want this to block the ability to
 # upgrade, and these checks are also in the control panel status checks.