diff --git a/api/blueprints/mail/oauth_callback.py b/api/blueprints/mail/oauth_callback.py
index 08349b9..eef0e37 100644
--- a/api/blueprints/mail/oauth_callback.py
+++ b/api/blueprints/mail/oauth_callback.py
@@ -166,7 +166,7 @@ async def mail_callback(
             tokens_saved = await current_app.mail_oauth_model.set_token(
                 db_conn = current_app.sql_writer,
                 mongo_conn = current_app.data_mongo,
-                session_token = inbound_headers["X-Session-Token"],
+                session_token = inbound_headers.get("X-Session-Token"),
                 user_info = kwargs["session_info"],
                 user_identifier = inbound_data["state"],
                 token = tokens.model_dump()