diff --git a/extenstion_mail.py b/extenstion_mail.py
new file mode 100644
index 0000000..22ae9b0
--- /dev/null
+++ b/extenstion_mail.py
@@ -0,0 +1,18 @@
+# -*- coding: utf-8 -*-
+"""
+
+"""
+
+import pandas as pd
+
+tab = pd.read_csv('csv\\annuaire_20160905.csv', encoding='cp1252')
+serie_exstension = tab['an/adresseCourriel'].str.split('@').str[1]
+
+liste_extension = serie_exstension[serie_exstension.notnull()].unique()
+
+gouvfr = [x for x in liste_extension if x[-7:] == 'gouv.fr']
+ambassade = [x for x in liste_extension if 'ambafrance' in x]
+not_gouvfr_nor_ambassade = [x for x in liste_extension
+    if x not in gouvfr and x not in ambassade]
+
+serie_exstension[serie_exstension.isin(not_gouvfr_nor_ambassade)].value_counts()