diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6badccff55..32b68c28a3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -119,6 +119,7 @@ and this project adheres to
 - ⚡️(frontend) improve tree stability #1207
 - ⚡️(frontend) improve accessibility #1232
 - 🛂(frontend) block drag n drop when not desktop #1239
+- ⚡(backend) move email sending to celery
 
 ### Fixed
 
diff --git a/src/backend/core/api/viewsets.py b/src/backend/core/api/viewsets.py
index 1fb95c4eb6..043c59b66d 100644
--- a/src/backend/core/api/viewsets.py
+++ b/src/backend/core/api/viewsets.py
@@ -47,7 +47,7 @@
 from core.services.converter_services import (
     YdocConverter,
 )
-from core.tasks.mail import send_ask_for_access_mail
+from core.tasks.mail import send_ask_for_access_mail, send_invitation_mail
 from core.utils import extract_attachments, filter_descendants
 
 from . import permissions, serializers, utils
@@ -1764,10 +1764,11 @@ def perform_create(self, serializer):
         access = serializer.save(document_id=self.kwargs["resource_id"])
 
         if access.user:
-            access.document.send_invitation_email(
+            send_invitation_mail.delay(
+                access.document.id,
                 access.user.email,
                 access.role,
-                self.request.user,
+                self.request.user.id,
                 access.user.language
                 or self.request.user.language
                 or settings.LANGUAGE_CODE,
@@ -2041,10 +2042,11 @@ def perform_create(self, serializer):
         """Save invitation to a document then send an email to the invited user."""
         invitation = serializer.save()
 
-        invitation.document.send_invitation_email(
+        send_invitation_mail.delay(
+            invitation.document.id,
             invitation.email,
             invitation.role,
-            self.request.user,
+            self.request.user.id,
             self.request.user.language or settings.LANGUAGE_CODE,
         )
 
diff --git a/src/backend/core/tasks/mail.py b/src/backend/core/tasks/mail.py
index 483c961486..dfc7f4be2c 100644
--- a/src/backend/core/tasks/mail.py
+++ b/src/backend/core/tasks/mail.py
@@ -22,3 +22,16 @@ def send_ask_for_access_mail(ask_for_access_id):
                 access.user.email,
                 access.user.language or settings.LANGUAGE_CODE,
             )
+
+@app.task
+def send_mail(document_id, subject, emails, context=None, language=None):
+    """Send email from a document template."""
+    document = models.Document.objects.get(id=document_id)
+    document.send_email(subject, emails, context, language)
+
+@app.task
+def send_invitation_mail(document_id, email, role, sender_id, language=None):
+    """Send invitation email for a document."""
+    document = models.Document.objects.get(id=document_id)
+    sender = models.User.objects.get(id=sender_id)
+    document.send_invitation_email(email, role, sender, language)