diff --git a/app/main/views/send.py b/app/main/views/send.py
index 7354b9de6..19b3c5a84 100644
--- a/app/main/views/send.py
+++ b/app/main/views/send.py
@@ -542,14 +542,7 @@ def _check_messages(service_id, template_id, upload_id, preview_row, letters_as_
     elif preview_row > 2:
         abort(404)
 
-    if 'file_uploads' not in session:
-        session['file_uploads'] = {}
-    session['file_uploads'][upload_id] = {}
-
     if any(recipients) and not recipients.has_errors:
-        session['file_uploads'][upload_id]['notification_count'] = len(recipients)
-        session['file_uploads'][upload_id]['template_id'] = str(template_id)
-        session['file_uploads'][upload_id]['valid'] = True
         set_metadata_on_csv_upload(
             service_id,
             upload_id,
@@ -561,8 +554,6 @@ def _check_messages(service_id, template_id, upload_id, preview_row, letters_as_
                 1600,
             ),
         )
-    else:
-        session['file_uploads'].pop(upload_id)
 
     return dict(
         recipients=recipients,
diff --git a/tests/app/main/views/test_send.py b/tests/app/main/views/test_send.py
index 707a2d220..bfdbdc194 100644
--- a/tests/app/main/views/test_send.py
+++ b/tests/app/main/views/test_send.py
@@ -382,7 +382,7 @@ def test_upload_csvfile_with_errors_shows_check_page_with_errors(
     )
 
     with logged_in_client.session_transaction() as session:
-        assert session['file_uploads'] == {}
+        assert 'file_uploads' not in session
 
     assert response.status_code == 200
     content = response.get_data(as_text=True)
@@ -501,7 +501,7 @@ def test_upload_csvfile_with_missing_columns_shows_error(
     )
 
     with client_request.session_transaction() as session:
-        assert session['file_uploads'] == {}
+        assert 'file_uploads' not in session
 
     assert normalize_spaces(page.select('.banner-dangerous')[0].text) == expected_error
 
@@ -1537,11 +1537,8 @@ def test_upload_csvfile_with_valid_phone_shows_all_numbers(
         content_type='multipart/form-data',
         follow_redirects=True
     )
-    with logged_in_client.session_transaction() as sess:
-        assert 'original_file_name' not in sess['file_uploads'][fake_uuid]
-        assert sess['file_uploads'][fake_uuid]['notification_count'] == 53
-        assert sess['file_uploads'][fake_uuid]['template_id'] == fake_uuid
-        assert sess['file_uploads'][fake_uuid]['valid'] is True
+    with logged_in_client.session_transaction() as session:
+        assert 'file_uploads' not in session
 
     mock_s3_set_metadata.assert_called_once_with(
         SERVICE_ONE_ID,