diff --git a/README.rst b/README.rst
index c9b0917..4c8a9e7 100644
--- a/README.rst
+++ b/README.rst
@@ -107,7 +107,19 @@ You can start the process as follows::
 
 Then follow the step on the console.
 
-There is also a non-interactive mode:
+There is also a non-interactive mode::
+
+  $ sudo ./run.py --silent-backup <your domain>
+
+You can also add a path, else it will be saved in ./modoboa_backup/Backup_M_Y_d_H_M::
+
+  $ sudo ./run.py --silent-backup --backup-path "/My_Backup_Path" <your domain>
+
+if you want to disable mail backup::
+
+  $ sudo ./run.py --backup --no-mail <your domain>
+
+This can be useful for larger instance
 
 1. Silent mode
 
diff --git a/run.py b/run.py
index 78b9877..c71ba21 100755
--- a/run.py
+++ b/run.py
@@ -120,6 +120,8 @@ def backup_system(config, args):
     utils.copy_file(args.configfile, backup_path)
     # Backup applications
     for app in PRIMARY_APPS:
+        if app == "dovecot" and args.no_mail:
+            utils.printcolor("Skipping mail backup", utils.BLUE)
         scripts.backup(app, config, backup_path)
 
 
@@ -171,6 +173,9 @@ def main(input_args):
         help="For script usage, do not require user interaction "
         "backup will be saved at ./modoboa_backup/Backup_M_Y_d_H_M "
         "if --backup-path is not provided")
+    parser.add_argument(
+        "--no-mail", action="store_true", default=False,
+        help="Disable mail backup (save space)")
     parser.add_argument(
         "--restore", type=str, metavar="path",
         help="Restore a previously backup up modoboa instance on a NEW machine. "