diff --git a/locale/de/LC_MESSAGES/django.po b/locale/de/LC_MESSAGES/django.po
index 4304f2d..45e0216 100644
--- a/locale/de/LC_MESSAGES/django.po
+++ b/locale/de/LC_MESSAGES/django.po
@@ -2,7 +2,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: Platform Back\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2023-08-23 08:08+0000\n"
+"POT-Creation-Date: 2023-11-23 13:41+0000\n"
 "Language: de\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
@@ -188,5 +188,7 @@ msgid "Nouvelle notification Visa"
 msgstr ""
 
 #: utils/mailer.py:18
-msgid "Bienvenue sur la plateforme BIMData.io"
-msgstr "Willkommen auf der Plattform BIMData.io"
+#, fuzzy, python-format
+#| msgid "Bienvenue sur la plateforme BIMData.io"
+msgid "Bienvenue sur la plateforme BIMData.io %(user_name)s"
+msgstr "Willkommen auf der Plattform BIMData.io  %(user_name)s"
diff --git a/locale/en/LC_MESSAGES/django.po b/locale/en/LC_MESSAGES/django.po
index 5e8c2a7..d0427ef 100644
--- a/locale/en/LC_MESSAGES/django.po
+++ b/locale/en/LC_MESSAGES/django.po
@@ -2,7 +2,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: Platform Back\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2023-08-23 08:08+0000\n"
+"POT-Creation-Date: 2023-11-23 13:41+0000\n"
 "Language: en\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
@@ -187,5 +187,7 @@ msgid "Nouvelle notification Visa"
 msgstr "New validation notification"
 
 #: utils/mailer.py:18
-msgid "Bienvenue sur la plateforme BIMData.io"
-msgstr "Welcome to BIMData.io Platform!"
+#, fuzzy, python-format
+#| msgid "Bienvenue sur la plateforme BIMData.io"
+msgid "Bienvenue sur la plateforme BIMData.io %(user_name)s"
+msgstr "Welcome to BIMData.io Platform  %(user_name)s!"
diff --git a/locale/es/LC_MESSAGES/django.po b/locale/es/LC_MESSAGES/django.po
index 967f761..a1757de 100644
--- a/locale/es/LC_MESSAGES/django.po
+++ b/locale/es/LC_MESSAGES/django.po
@@ -2,7 +2,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: Platform Back\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2023-08-23 08:10+0000\n"
+"POT-Creation-Date: 2023-11-23 13:41+0000\n"
 "Language: es\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
@@ -184,5 +184,7 @@ msgid "Nouvelle notification Visa"
 msgstr ""
 
 #: utils/mailer.py:18
-msgid "Bienvenue sur la plateforme BIMData.io"
-msgstr "Te damos la bienvenida a la plataforma BIMData.io"
+#, fuzzy, python-format
+#| msgid "Bienvenue sur la plateforme BIMData.io"
+msgid "Bienvenue sur la plateforme BIMData.io %(user_name)s"
+msgstr "Te damos la bienvenida a la plataforma BIMData.io  %(user_name)s"
diff --git a/locale/fr/LC_MESSAGES/django.po b/locale/fr/LC_MESSAGES/django.po
index 1a8bb84..65116e4 100644
--- a/locale/fr/LC_MESSAGES/django.po
+++ b/locale/fr/LC_MESSAGES/django.po
@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2023-08-23 08:08+0000\n"
+"POT-Creation-Date: 2023-11-23 13:41+0000\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -113,7 +113,8 @@ msgid ""
 "<strong>%(email_author)s</strong> a créé un nouveau BCF dans le projet "
 "<strong>%(project_name)s</strong>."
 msgstr ""
-"<strong>%(email_author)s</strong> a créée un nouveau BCF dans le projet <strong>%(project_name)s</strong>."
+"<strong>%(email_author)s</strong> a créée un nouveau BCF dans le projet "
+"<strong>%(project_name)s</strong>."
 
 #: templates/mails/notifications-bcf.html:259
 #: templates/mails/notifications-bcf.html:427
@@ -208,5 +209,7 @@ msgid "Nouvelle notification Visa"
 msgstr "Nouvelle notification Visa"
 
 #: utils/mailer.py:18
-msgid "Bienvenue sur la plateforme BIMData.io"
+#, fuzzy, python-format
+#| msgid "Bienvenue sur la plateforme BIMData.io"
+msgid "Bienvenue sur la plateforme BIMData.io %(user_name)s"
 msgstr "Bienvenue sur la plateforme BIMData.io"
diff --git a/locale/it/LC_MESSAGES/django.po b/locale/it/LC_MESSAGES/django.po
index 156547d..4d0f026 100644
--- a/locale/it/LC_MESSAGES/django.po
+++ b/locale/it/LC_MESSAGES/django.po
@@ -2,7 +2,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: Platform Back\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2023-08-23 08:08+0000\n"
+"POT-Creation-Date: 2023-11-23 13:41+0000\n"
 "Language: it\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
@@ -185,5 +185,7 @@ msgid "Nouvelle notification Visa"
 msgstr ""
 
 #: utils/mailer.py:18
-msgid "Bienvenue sur la plateforme BIMData.io"
-msgstr "Benvenuto sulla piattaforma BIMData.io!"
+#, fuzzy, python-format
+#| msgid "Bienvenue sur la plateforme BIMData.io"
+msgid "Bienvenue sur la plateforme BIMData.io %(user_name)s"
+msgstr "Benvenuto sulla piattaforma BIMData.io  %(user_name)s!"
diff --git a/utils/mailer.py b/utils/mailer.py
index 4b702c9..c9abf83 100644
--- a/utils/mailer.py
+++ b/utils/mailer.py
@@ -3,10 +3,9 @@
 from django.conf import settings
 from django.core.mail import EmailMessage
 from django.core.mail import get_connection
-from django.template import engines
 from django.template.loader import render_to_string
 from django.utils import translation
-from django.utils.translation import gettext as _
+from django.utils.translation import gettext_lazy as _
 
 logger = logging.getLogger("django")
 
@@ -15,7 +14,7 @@ def subjects(template_name):
     subs = {
         "notifications-bcf": _("Nouvelle notification BCF"),
         "notifications-visa": _("Nouvelle notification Visa"),
-        "mailing-welcome": _("Bienvenue sur la plateforme BIMData.io"),
+        "mailing-welcome": _("Bienvenue sur la plateforme BIMData.io %(user_name)s"),
     }
     return subs[template_name]
 
@@ -36,8 +35,7 @@ def send_mail(
     content["bimdata_url"] = settings.PLATFORM_URL
 
     with translation.override(language):
-        template_subject = engines["django"].from_string(subjects(template_name))
-        subject = template_subject.render()
+        subject = subjects(template_name) % content
         html_content = render_to_string(f"mails/{template_name}.html", content)
     if settings.APP_EMAIL_HOST:
         connection = get_connection(
diff --git a/utils/tests/test_mails.py b/utils/tests/test_mails.py
index ea17ed1..9ff5354 100644
--- a/utils/tests/test_mails.py
+++ b/utils/tests/test_mails.py
@@ -1,14 +1,19 @@
 from django.core import mail
 from django.test import TestCase
-from utils import mailer
-from parameterized import parameterized
 from django.utils.translation import activate
+from parameterized import parameterized
+
+from utils import mailer
 
 
 class EmailTest(TestCase):
     @parameterized.expand(
         [
-            ("mailing-welcome", {}, "Bienvenue sur la plateforme BIMData.io"),
+            (
+                "mailing-welcome",
+                {"user_name": "Jane"},
+                "Bienvenue sur la plateforme BIMData.io Jane",
+            ),
         ]
     )
     def test_send_email_invitation_with_django(