diff --git a/controller/auth/kratos.py b/controller/auth/kratos.py
index 178b29bb..a93c09ef 100644
--- a/controller/auth/kratos.py
+++ b/controller/auth/kratos.py
@@ -25,6 +25,18 @@
 KRATOS_IDENTITY_CACHE: Dict[str, Any] = {}
 KRATOS_IDENTITY_CACHE_TIMEOUT = timedelta(minutes=30)
 
+LANGUAGE_MESSAGES = {
+    "en": "Hello!\n\nClick the link to complete your account setup:\n\n",
+    "de": "Hallo!\n\nKlicken Sie auf den Link, um Ihre Kontoeinrichtung abzuschließen:\n\n",
+}
+
+INVITATION_SUBJECT = "Sie sind zu unserer app eingeladen/You are invited to our app"
+
+LANGUAGE_EXPIRATION_INFO = {
+    "en": "This link can only be clicked once and is valid for 2 days. Contact your system admin if you have issues.",
+    "de": "Dieser Link kann nur einmal angeklickt werden und ist 2 Tage lang gültig. Kontaktieren Sie Ihren Systemadministrator, wenn Sie Probleme haben.",
+}
+
 
 def get_cached_values(update_db_users: bool = True) -> Dict[str, Dict[str, Any]]:
     global KRATOS_IDENTITY_CACHE
@@ -239,9 +251,9 @@ def get_recovery_link(user_id: str) -> str:
 
 def email_with_link(to_email: str, recovery_link: str) -> None:
     msg = MIMEText(
-        f"Welcome! Click the link to complete your account setup:\n\n{recovery_link}"
+        f"{LANGUAGE_MESSAGES['de']}{recovery_link}\n\n{LANGUAGE_EXPIRATION_INFO['de']}\n\n\n------\n\n{LANGUAGE_MESSAGES['en']}{recovery_link}\n\n{LANGUAGE_EXPIRATION_INFO['en']}",
     )
-    msg["Subject"] = "You're invited to our app!"
+    msg["Subject"] = INVITATION_SUBJECT
     msg["From"] = "no-reply@kern.ai"
     msg["To"] = to_email
 
diff --git a/controller/auth/manager.py b/controller/auth/manager.py
index f3bcca27..d75154f7 100644
--- a/controller/auth/manager.py
+++ b/controller/auth/manager.py
@@ -177,6 +177,7 @@ def invite_users(
     emails: List[str],
     organization_name: str,
     user_role: str,
+    language: str,
     provider: Optional[str] = None,
 ):
     user_ids = []
@@ -192,6 +193,9 @@ def invite_users(
         # Assign the user role
         user_manager.update_user_role(user["id"], user_role)
 
+        # Add the preferred language
+        user_manager.update_user_field(user["id"], "language_display", language)
+
         # Get the recovery link for the email
         recovery_link = kratos.get_recovery_link(user["id"])
         if not recovery_link:
diff --git a/fast_api/models.py b/fast_api/models.py
index ab44f950..62115d65 100644
--- a/fast_api/models.py
+++ b/fast_api/models.py
@@ -503,6 +503,7 @@ class InviteUsersBody(BaseModel):
     organization_name: StrictStr
     provider: Optional[StrictStr] = None
     user_role: StrictStr
+    language: StrictStr
 
 
 class CheckInviteUsersBody(BaseModel):
diff --git a/fast_api/routes/misc.py b/fast_api/routes/misc.py
index aae1f4a9..cd72f32d 100644
--- a/fast_api/routes/misc.py
+++ b/fast_api/routes/misc.py
@@ -294,7 +294,11 @@ def invite_users(request: Request, body: InviteUsersBody = Body(...)):
     if not auth.check_is_full_admin(request):
         raise AuthManagerError("Full admin access required")
     data = auth.invite_users(
-        body.emails, body.organization_name, body.user_role, body.provider
+        body.emails,
+        body.organization_name,
+        body.user_role,
+        body.language,
+        body.provider,
     )
     return pack_json_result(data)
 
diff --git a/tests/fast_api/routes/test_invite_users.py b/tests/fast_api/routes/test_invite_users.py
index a7fddc9a..c8d7a802 100644
--- a/tests/fast_api/routes/test_invite_users.py
+++ b/tests/fast_api/routes/test_invite_users.py
@@ -57,6 +57,7 @@ def test_invite_users(client: TestClient, org: Organization):
             "organization_name": org.name,
             "emails": valid_emails_to_test,
             "user_role": UserRoles.ENGINEER.value,
+            "language": "en",
         },
     )
     assert response.status_code == 200