diff --git a/dapostinstall.sh b/dapostinstall.sh
index 67f9262..d5b789f 100755
--- a/dapostinstall.sh
+++ b/dapostinstall.sh
@@ -73,6 +73,7 @@ install_local_plugin_archive() {
     local archive="$1"
     local plugin_name
     local plugin_dir
+    local install_script
 
     plugin_name="$(basename "$archive" .tar.gz)"
     plugin_dir="$DADIR/plugins/$plugin_name"
@@ -81,21 +82,36 @@ install_local_plugin_archive() {
     rm -rf "$plugin_dir"
     mkdir -p "$plugin_dir"
     tar -zxf "$archive" -C "$plugin_dir"
+    chown -R diradmin:diradmin "$plugin_dir"
 
     if [[ -f "$plugin_dir/install.sh" ]]; then
+        install_script="./install.sh"
         chmod 755 "$plugin_dir/install.sh"
-        (
-            cd "$plugin_dir"
-            ./install.sh
-        )
+    elif [[ -f "$plugin_dir/scripts/install.sh" ]]; then
+        install_script="./scripts/install.sh"
+        chmod 755 "$plugin_dir/scripts/install.sh"
     else
-        fail "Brak wykonywalnego install.sh w $plugin_dir"
+        fail "Brak install.sh w $plugin_dir"
+    fi
+
+    (
+        cd "$plugin_dir"
+        "$install_script"
+    )
+
+    if [[ "$plugin_name" == "imapsync" ]]; then
+        echo 'imapsync=ON' >> /usr/local/directadmin/data/users/admin/user.conf
+        cp "$DAPOSTINSTALL_DIR/lang_pl.php" "$plugin_dir/lang"
+        chown -R diradmin:diradmin "$plugin_dir"
     fi
 
     if [[ "$plugin_name" == "redis-manager" ]]; then
         require_file "$DADIR/plugins/redis-manager/scripts/redis_install.sh"
         chmod 755 "$DADIR/plugins/redis-manager/scripts/redis_install.sh"
-        "$DADIR/plugins/redis-manager/scripts/redis_install.sh" "$REDIS_VERSION"
+        (
+            cd "$plugin_dir"
+            ./scripts/redis_install.sh "$REDIS_VERSION"
+        )
     fi
 }
 
@@ -483,18 +499,12 @@ sed -i 's^/etc/ssh/sshd_config^/etc/ssh/sshd_config_placebo^g' $DADIR/conf/direc
 systemctl restart directadmin
 
 echo "Instalacja pluginów DirectAdmin"
+echo "Instalacja pakietu IMAPsync"
+dnf -y install imapsync
 cd $DAPOSTINSTALL_DIR
 install_local_plugins
 cd $DAPOSTINSTALL_DIR
 
-echo "Instalacja IMAPsync"
-dnf -y install imapsync
-mkdir $DADIR/plugins/imapsync
-tar -zxf imapsync.tar.gz -C $DADIR/plugins/imapsync
-$DADIR/plugins/imapsync/scripts/install.sh
-echo 'imapsync=ON' >> /usr/local/directadmin/data/users/admin/user.conf
-cp lang_pl.php $DADIR/plugins/imapsync/lang
-
 echo "instalacja promptów"
 sh prompt.sh
 echo "Blokada dostępu do pluginu CustomBuild i informacjach o licencji"
diff --git a/imapsync.tar.gz b/imapsync.tar.gz
deleted file mode 100644
index fcc1d74..0000000
Binary files a/imapsync.tar.gz and /dev/null differ
diff --git a/plugins/imapsync.tar.gz b/plugins/imapsync.tar.gz
new file mode 100644
index 0000000..c63a262
Binary files /dev/null and b/plugins/imapsync.tar.gz differ
diff --git a/tests/quality_checks.sh b/tests/quality_checks.sh
index 7faeb89..fbead8a 100644
--- a/tests/quality_checks.sh
+++ b/tests/quality_checks.sh
@@ -79,14 +79,17 @@ assert_archive_clean_for_linux_tar "$ROOT_DIR/branding/da-branding-hitme.tar.gz"
 [[ -f "$ROOT_DIR/plugins/borg-restore.tar.gz" ]] || fail "missing borg-restore plugin archive"
 [[ -f "$ROOT_DIR/plugins/db-manager.tar.gz" ]] || fail "missing db-manager plugin archive"
 [[ -f "$ROOT_DIR/plugins/redis-manager.tar.gz" ]] || fail "missing redis-manager plugin archive"
+[[ -f "$ROOT_DIR/plugins/imapsync.tar.gz" ]] || fail "missing imapsync plugin archive"
 assert_archive_clean_for_linux_tar "$ROOT_DIR/plugins/borg-restore.tar.gz"
 assert_archive_clean_for_linux_tar "$ROOT_DIR/plugins/db-manager.tar.gz"
 assert_archive_clean_for_linux_tar "$ROOT_DIR/plugins/redis-manager.tar.gz"
+assert_archive_clean_for_linux_tar "$ROOT_DIR/plugins/imapsync.tar.gz"
 assert_gzip_tar_contains "$ROOT_DIR/plugins/borg-restore.tar.gz" './install.sh'
 assert_gzip_tar_contains "$ROOT_DIR/plugins/db-manager.tar.gz" './install.sh'
 assert_gzip_tar_contains "$ROOT_DIR/plugins/redis-manager.tar.gz" './install.sh'
 assert_gzip_tar_contains "$ROOT_DIR/plugins/redis-manager.tar.gz" './scripts/redis_install.sh'
 assert_gzip_tar_contains "$ROOT_DIR/plugins/redis-manager.tar.gz" './scripts/redis_migrate.sh'
+assert_gzip_tar_contains "$ROOT_DIR/plugins/imapsync.tar.gz" './scripts/install.sh'
 
 assert_file_contains "$ROOT_DIR/da_cli.sh" '^DEFAULTPACKAGE=NO-LIMIT$'
 assert_file_not_contains "$ROOT_DIR/da_cli.sh" '^eparated list of IP addresses$'
@@ -174,14 +177,18 @@ assert_file_contains "$ROOT_DIR/dapostinstall.sh" 'Brak paczek pluginów w \$PLU
 assert_file_contains "$ROOT_DIR/dapostinstall.sh" 'plugin_name="\$\(basename "\$archive" \.tar\.gz\)"'
 assert_file_contains "$ROOT_DIR/dapostinstall.sh" 'mkdir -p "\$plugin_dir"'
 assert_file_contains "$ROOT_DIR/dapostinstall.sh" 'tar -zxf "\$archive" -C "\$plugin_dir"'
+assert_file_contains "$ROOT_DIR/dapostinstall.sh" 'chown -R diradmin:diradmin "\$plugin_dir"'
 assert_file_contains "$ROOT_DIR/dapostinstall.sh" 'chmod 755 "\$plugin_dir/install\.sh"'
+assert_file_contains "$ROOT_DIR/dapostinstall.sh" 'chmod 755 "\$plugin_dir/scripts/install\.sh"'
 assert_file_contains "$ROOT_DIR/dapostinstall.sh" 'cd "\$plugin_dir"'
 assert_file_contains "$ROOT_DIR/dapostinstall.sh" '\./install\.sh'
+assert_file_contains "$ROOT_DIR/dapostinstall.sh" '\./scripts/install\.sh'
 assert_file_contains "$ROOT_DIR/dapostinstall.sh" 'chmod 755 "\$DADIR/plugins/redis-manager/scripts/redis_install\.sh"'
-assert_file_contains "$ROOT_DIR/dapostinstall.sh" '"\$DADIR/plugins/redis-manager/scripts/redis_install\.sh" "\$REDIS_VERSION"'
+assert_file_contains "$ROOT_DIR/dapostinstall.sh" '\./scripts/redis_install\.sh "\$REDIS_VERSION"'
 assert_file_not_contains "$ROOT_DIR/dapostinstall.sh" 'redis_migrate\.sh'
 assert_file_not_contains "$ROOT_DIR/dapostinstall.sh" 'redis_management\.tar\.gz'
 assert_file_not_contains "$ROOT_DIR/dapostinstall.sh" 'plugins/redis_management'
+assert_file_not_contains "$ROOT_DIR/dapostinstall.sh" 'tar -zxf imapsync\.tar\.gz'
 assert_file_contains "$ROOT_DIR/mail_powitalny.txt" '\{\{DA_HOSTNAME\}\}'
 assert_file_contains "$ROOT_DIR/mail_powitalny.txt" '\{\{DA_HASLO\}\}'
 assert_file_contains "$ROOT_DIR/mail_powitalny.txt" '\{\{DA_PHP_LIST\}\}'