diff --git a/app/__init__.py b/app/__init__.py
index 6a1ea6d04..d6e0be82f 100755
--- a/app/__init__.py
+++ b/app/__init__.py
@@ -637,14 +637,12 @@ def critical_error(msg):
     import app.scodoc.sco_utils as scu
 
     log(f"\n*** CRITICAL ERROR: {msg}")
-    send_scodoc_alarm(f"CRITICAL ERROR: {msg}", msg)
+    subject = f"CRITICAL ERROR: {msg}".strip()[:68]
+    send_scodoc_alarm(subject, msg)
     clear_scodoc_cache()
     raise ScoValueError(
         f"""
-    Une erreur est survenue.
-
-    Si le problème persiste, merci de contacter le support ScoDoc via
-    {scu.SCO_DISCORD_ASSISTANCE}
+    Une erreur est survenue, veuillez ré-essayer.
 
     {msg}
     """
diff --git a/app/email.py b/app/email.py
index 5efe838fe..d4e87fad3 100644
--- a/app/email.py
+++ b/app/email.py
@@ -9,9 +9,9 @@ import datetime
 from threading import Thread
 
 from flask import current_app, g
-from flask_mail import Message
+from flask_mail import BadHeaderError, Message
 
-from app import mail
+from app import log, mail
 from app.models.departements import Departement
 from app.models.config import ScoDocSiteConfig
 from app.scodoc import sco_preferences
@@ -20,7 +20,15 @@ from app.scodoc import sco_preferences
 def send_async_email(app, msg):
     "Send an email, async"
     with app.app_context():
-        mail.send(msg)
+        try:
+            mail.send(msg)
+        except BadHeaderError:
+            log(
+                f"""send_async_email: BadHeaderError
+                msg={msg}
+                """
+            )
+            raise
 
 
 def send_email(
diff --git a/sco_version.py b/sco_version.py
index 67362a1aa..4675621d2 100644
--- a/sco_version.py
+++ b/sco_version.py
@@ -1,7 +1,7 @@
 # -*- mode: python -*-
 # -*- coding: utf-8 -*-
 
-SCOVERSION = "9.6.966"
+SCOVERSION = "9.6.967"
 
 SCONAME = "ScoDoc"
 
@@ -14,7 +14,7 @@ SCONEWS = """
       <li>Nouveaux bulletins BUT compacts</li>
       <li>Nouvelle gestion des absences et assiduité</li>
       <li>Mise à jour logiciels: Debian 12, Python 3.11, ...</li>
-      <li>Evaluations bonus</li>
+      <li>Évaluations bonus</li>
 </ul>
 
 <li>ScoDoc 9.5 (juillet 2023)</li>