diff --git a/modoboa_contacts/importer/__init__.py b/modoboa_contacts/importer/__init__.py
index 9946d01..a59d381 100644
--- a/modoboa_contacts/importer/__init__.py
+++ b/modoboa_contacts/importer/__init__.py
@@ -8,7 +8,7 @@
 ]
 
 
-def detect_import_backend(fp, delimiter: str = ";"):
+def get_import_backend(fp, delimiter: str = ";", name: str = "auto"):
     reader = csv.DictReader(
         fp,
         delimiter=delimiter,
@@ -18,16 +18,21 @@ def detect_import_backend(fp, delimiter: str = ";"):
     rows = reader
 
     for backend in BACKENDS:
-        if backend.detect_from_columns(columns):
+        if name == "auto":
+            if backend.detect_from_columns(columns):
+                return backend, rows
+        elif name == backend.name:
             return backend, rows
 
     raise RuntimeError("Failed to detect backend to use")
 
 
 def import_csv_file(addressbook,
+                    backend_name: str,
                     csv_filename: str,
                     delimiter: str,
                     carddav_password: str = None):
     with open(csv_filename) as fp:
-        backend, rows = detect_import_backend(fp, delimiter)
+        backend, rows = get_import_backend(
+            fp, delimiter, backend_name)
         backend(addressbook).proceed(rows, carddav_password)
diff --git a/modoboa_contacts/importer/backends/outlook.py b/modoboa_contacts/importer/backends/outlook.py
index 597fc20..4ebc87a 100644
--- a/modoboa_contacts/importer/backends/outlook.py
+++ b/modoboa_contacts/importer/backends/outlook.py
@@ -32,7 +32,7 @@ class OutlookBackend(ImporterBackend):
 
     @classmethod
     def detect_from_columns(cls, columns):
-        return columns == OUTLOOK_COLUMNS
+        return set(OUTLOOK_COLUMNS).issubset(columns)
 
     def get_first_name(self, values: dict) -> str:
         result = values["First Name"]
diff --git a/modoboa_contacts/management/commands/import_contacts.py b/modoboa_contacts/management/commands/import_contacts.py
index 7e59a27..4fbcb25 100644
--- a/modoboa_contacts/management/commands/import_contacts.py
+++ b/modoboa_contacts/management/commands/import_contacts.py
@@ -23,6 +23,13 @@ def add_arguments(self, parser):
                 "contacts will be synced to CardDAV servert too"
             )
         )
+        parser.add_argument(
+            "--backend", type=str, default="auto",
+            help=(
+                "Specify import backend to use. Defaults to 'auto', "
+                "meaning the script will try to guess which one to use"
+            )
+        )
         parser.add_argument(
             "email", type=str,
             help="Email address to import contacts for"
@@ -44,6 +51,7 @@ def handle(self, *args, **options):
         try:
             import_csv_file(
                 addressbook,
+                options["backend"],
                 options["file"],
                 options["delimiter"],
                 options.get("carddav_password")
diff --git a/modoboa_contacts/tests.py b/modoboa_contacts/tests.py
index 476bf9a..0e73b12 100644
--- a/modoboa_contacts/tests.py
+++ b/modoboa_contacts/tests.py
@@ -375,7 +375,7 @@ def test_import_unknown_backend(self):
         self.assertEqual(str(ctx.exception),
                          "Failed to detect backend to use")
 
-    def test_import_from_outlook(self):
+    def test_import_from_outlook_auto(self):
         management.call_command(
             "import_contacts", "user@test.com", self.path)
         address = models.EmailAddress.objects.get(
@@ -389,6 +389,24 @@ def test_import_from_outlook(self):
             "Street 1 Street 2"
         )
 
+    def test_import_from_outlook(self):
+        management.call_command(
+            "import_contacts",
+            "user@test.com",
+            self.path,
+            backend="outlook",
+        )
+        address = models.EmailAddress.objects.get(
+            address="toto@titi.com")
+        phone = models.PhoneNumber.objects.get(
+            number="12345678")
+        self.assertEqual(address.contact.first_name, "Toto Tata")
+        self.assertEqual(address.contact.addressbook.user.email, "user@test.com")
+        self.assertEqual(
+            address.contact.address,
+            "Street 1 Street 2"
+        )
+
     def test_import_and_carddav_sync(self):
         with httmock.HTTMock(mocks.options_mock, mocks.put_mock):
             management.call_command(