diff --git a/lib/install.sh b/lib/install.sh
index f95d6ad..b93b307 100755
--- a/lib/install.sh
+++ b/lib/install.sh
@@ -28,7 +28,7 @@ function prepare_lxd {
         sudo groupadd --force "$NEW_GROUP"
         sudo usermod --append --groups "$NEW_GROUP" "$(whoami)"
 
-        sg "$NEW_GROUP" -c "$0 SESSION_RELOAD_REQUIRED $TARGET $@"
+        sg "$NEW_GROUP" -c "env EMAIL=$valid_email $0 SESSION_RELOAD_REQUIRED $TARGET"
         sg "$NEW_GROUP" -c bash
         kill -9 "$PPID"
         # no further processing because exec has been called!
@@ -41,7 +41,7 @@ function prepare_lxd {
 
     override_lxd_service
 
-    # test lxdbr0
+    # test lxdbr0 FIXME: preseed too much repetitions!!!!
     if ! lxc network info lxdbr0 &>/dev/null; then
 
         echo "bridge <lxdbr0> down, so initialization will use default preseed..."
@@ -132,6 +132,11 @@ networks:
   config:
     ipv4.address: auto
     ipv6.address: none
+storage_pools:
+- config: {}
+  description: ""
+  name: default
+  driver: dir
 profiles:
 - config: {}
   description: ""
@@ -385,6 +390,9 @@ EOF
 function ask_for_email {
     local PREFIX="install:ask_for_email"
     valid_email=$(auto_detect_email)
+
+    echo "valid_email=$valid_email" && exit 1
+
     while ! is_email_valid "$valid_email"; do
         echo -n "mandatory email: "
         read -rei "$valid_email" valid_email
@@ -410,12 +418,14 @@ function is_email_valid {
 }
 
 function auto_detect_email {
-    found_email=""
-    if [[ -f $HOME/.ssh/authorized_keys ]]; then
-        while IFS= read -r line; do
-            found_email="$line"
-            is_email_valid "$found_email" && break
-        done < <(cut -d ' ' -f3 <"$HOME/.ssh/authorized_keys")
+    found_email="${EMAIL:-}"
+    if ! is_email_valid "$found_email"; then
+        if [[ -f $HOME/.ssh/authorized_keys ]]; then
+            while IFS= read -r line; do
+                found_email="$line"
+                is_email_valid "$found_email" && break
+            done < <(cut -d ' ' -f3 <"$HOME/.ssh/authorized_keys")
+        fi
     fi
 
     builtin echo "$found_email"
@@ -458,7 +468,7 @@ else
     # prepare_toolbox
     # add_toolbox_sudoers
     prepare_nftables
-    prepare_lxd $@
+    prepare_lxd
     preload_bookworm_image
     miaou_resolver
     miaou_evalfrombashrc