diff --git a/uid2_client/__init__.py b/uid2_client/__init__.py
index 608a265..06cc20e 100644
--- a/uid2_client/__init__.py
+++ b/uid2_client/__init__.py
@@ -7,6 +7,7 @@
     decrypt_token: decrypt and advertising token to extract advertising ID from it
 """
 
+default_new_session = lambda: None
 
 from .auto_refresh import *
 from .client import *
diff --git a/uid2_client/request_response_util.py b/uid2_client/request_response_util.py
index c4741b7..553e370 100644
--- a/uid2_client/request_response_util.py
+++ b/uid2_client/request_response_util.py
@@ -1,9 +1,13 @@
 import base64
-from importlib.metadata import version
 import os
+import threading
+from importlib.metadata import version
+from typing import Optional
+
 import requests
 
-from uid2_client.encryption import _encrypt_gcm, _decrypt_gcm
+import uid2_client
+from uid2_client.encryption import _decrypt_gcm, _encrypt_gcm
 
 
 def _make_url(base_url, path):
@@ -40,5 +44,15 @@ def parse_v2_response(secret_key, encrypted, nonce):
     return payload[16:]
 
 
-def post(base_url, path, headers, data):
-    return requests.post(_make_url(base_url, path), data=data, headers=headers)
+def __default_new_session(threadlocal=threading.local()):
+    if getattr(threadlocal, 'session', None) is None:
+        threadlocal.session = requests.Session()
+
+    return threadlocal.session
+
+
+def post(base_url, path, headers, data, session: Optional[requests.Session] = None):
+    session = (session or uid2_client.default_new_session()
+               ) or __default_new_session()
+
+    return session.post(_make_url(base_url, path), data=data, headers=headers, timeout=5)