diff --git a/.gitignore b/.gitignore
index abea519..37b62a2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,6 @@
 /.project
 /config.sh
+/log/*
+!/log/.placeholder
 .directory
+nohup.out
\ No newline at end of file
diff --git a/README b/README
index 5271565..a1aef73 100644
--- a/README
+++ b/README
@@ -4,9 +4,9 @@ run all commands from root (as superuser)
 
 
 install dependency packages:
-    you need: bash sudo uuid-runtime aufs-tools fuse genisoimage
+    you need: bash sudo uuid-runtime aufs-tools fuse genisoimage mutt
     for apt based OS use command:
-        apt-get install bash sudo uuid-runtime aufs-tools fuse genisoimage
+        apt-get install bash sudo uuid-runtime aufs-tools fuse genisoimage mutt
 
 
 create and edit config file:
@@ -20,6 +20,15 @@ create and edit config file:
             $BASE_DIR/chrooter/chrooter.sh $@
         }
         OPENTOONZ_TESTING_TAG="morevna"
+        export EMAIL_FAILED="e@mail.org"
+        export EMAIL_SUCCESS="$EMAIL_FAILED"
+        export EMAIL_SUBJECT="builder task finished"
+
+    for emails configure ~/.muttrc, for example:
+        set smtp_url=smtps://login:password@server.org
+        set from=e@mail.org
+        set record=
+    see "background tasks" below
 
 
 download virtual environment:
@@ -183,6 +192,15 @@ see also
     env-builder-data/build/script/common/manager.sh
 
 
+Background tasks:
+    to call task in background use:
+        backgrouns.sh some_command
+    command will run in background and result will be sent to email (see config.sh)
+    if you do not want to receive emai about success result (look only errors), call:
+        backgrouns.sh -q some_command
+    logs stored in log/background.log
+
+
 Troubles:
     sometimes virtual environmens does not unmounted properly
     to clear this you need to unmount all mounts for */chrooter-*
@@ -193,6 +211,10 @@ Troubles:
         umount "/some_path/chrooter-SOME_UUID"
     or with "force" option
         umount -f "/some_path/chrooter-SOME_UUID" 
+    or with "lazy" option
+        umount -l "/some_path/chrooter-SOME_UUID" 
+    and check againt with
+        mount
 
     after that remove the files
     you MUST do unmount before, if some dir are still mounted you can remove some system files
diff --git a/background.sh b/background.sh
new file mode 100755
index 0000000..c638277
--- /dev/null
+++ b/background.sh
@@ -0,0 +1,25 @@
+set -e
+
+
+BASE_DIR=$(cd `dirname "$0"`; pwd)
+CONFIG_FILE="$BASE_DIR/config.sh"
+if [ -f "$CONFIG_FILE" ]; then
+    source "$CONFIG_FILE"
+fi
+
+
+LOG_FILE="$BASE_DIR/log/background.log"
+
+echo "-------------------------------" >> "$LOG_FILE"
+date                                   >> "$LOG_FILE"
+echo background.sh "$@"                >> "$LOG_FILE"
+echo "-------------------------------" >> "$LOG_FILE"
+
+if [ "$1" == "-q" ]; then
+    export EMAIL_SUCCESS=
+    nohup "$BASE_DIR/withemail.sh" ${@:2} &>> "$LOG_FILE" &
+else
+    nohup "$BASE_DIR/withemail.sh" $@ &>> "$LOG_FILE" &
+fi
+
+echo "task now in backround"
diff --git a/config.sh.blank b/config.sh.blank
index 5c4a09e..a03a6df 100644
--- a/config.sh.blank
+++ b/config.sh.blank
@@ -29,3 +29,6 @@ chrooter() {                               # configure chrooter command
 # OPENTOONZ_TESTING_TAG="test"             # uses in build-opentoonz-testing.sh for naming out packages
 # SYNFIGSTUDIO_TESTING_TAG="test"          # uses in build-synfigstudio.sh for naming out packages
 
+#export EMAIL_FAILED="e@mail.org"
+#export EMAIL_SUCCESS="$EMAIL_FAILED"
+#export EMAIL_SUBJECT="builder task finished"
diff --git a/gen-name.sh b/gen-name.sh
index 7e1d4d8..a71f78a 100644
--- a/gen-name.sh
+++ b/gen-name.sh
@@ -5,10 +5,10 @@ gen_name_template() {
     local PLATFORM="$3"
     local ARCH="$4"
     local SUFFIX="$5"
-    
+
     if [ ! -z "$TAG" ]; then
         TAG="-$TAG"
     fi
-    
+
     echo "$NAME-%VERSION%$TAG-%DATE%-$PLATFORM$ARCH-%COMMIT%$SUFFIX"
 }
diff --git a/log/.placeholder b/log/.placeholder
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/log/.placeholder
diff --git a/withemail.sh b/withemail.sh
new file mode 100755
index 0000000..aeefa7f
--- /dev/null
+++ b/withemail.sh
@@ -0,0 +1,51 @@
+#!/bin/bash
+
+set -e
+set -o pipefail
+
+# accepts environment vars
+# EMAIL_SUCCESS
+# EMAIL_FAILED
+# EMAIL_QUIET
+# EMAIL_SUBJECT
+# EMAIL_BODY
+
+
+if [ ! -z "$EMAIL_QUIET" ]; then
+    # report only errors
+    EMAIL_SUCCESS=
+fi
+
+if [ -z "$EMAIL_SUBJECT" ]; then
+    EMAIL_SUBJECT="builder task finished"
+fi
+
+COMMAND="$@"
+LOG_FILE="/tmp/withemail-`uuidgen`.log"
+touch "$LOG_FILE"
+
+
+send_email() {
+    local EMAIL="$1"
+    local MESSAGE="$2"
+
+    echo "$MESSAGE"
+
+    if [ ! -z "$EMAIL" ]; then
+        mutt -s "$EMAIL_SUBJECT - $MESSAGE" -a "$LOG_FILE" -- "$EMAIL" << EOF
+$EMAIL_BODY
+
+Command:
+    $COMMAND
+
+$MESSAGE
+EOF
+        echo "email sent to $EMAIL"
+    fi
+    rm "$LOG_FILE"
+}
+
+
+("$@" 2>&1 | tee "$LOG_FILE") || (send_email "$EMAIL_FAILED" "FAILED" && false)
+
+send_email "$EMAIL_SUCCESS" "SUCCESS"