diff --git a/mail_composer_cc_bcc/models/mail_mail.py b/mail_composer_cc_bcc/models/mail_mail.py
index e01ac8a0df..29e906780b 100644
--- a/mail_composer_cc_bcc/models/mail_mail.py
+++ b/mail_composer_cc_bcc/models/mail_mail.py
@@ -18,7 +18,13 @@
 
 def format_emails(partners):
     emails = [
-        tools.formataddr((p.name or "False", p.email or "False")) for p in partners
+        tools.formataddr(
+            (
+                p.name or "False",
+                p.email and tools.mail._normalize_email(p.email) or "False",
+            )
+        )
+        for p in partners
     ]
     return ", ".join(emails)
 
@@ -48,8 +54,8 @@ def _send(  # noqa: max-complexity: 4
         success_pids = []
         failure_type = None
         # ===== Same with native Odoo =====
-        # https://github.com/odoo/odoo/blob/1098b033b4e1811d6ff4b8c3b90aa6b9e697cb93
-        # /addons/mail/models/mail_mail.py#L465
+        # https://github.com/odoo/odoo/blob/2baa481e14ca705f4c6d3d4d900daf24442a4aa5
+        # /addons/mail/models/mail_mail.py#L463
         try:
             if mail.state != "outgoing":
                 if mail.state != "exception" and mail.auto_delete:
@@ -129,7 +135,7 @@ def _send(  # noqa: max-complexity: 4
                 )
 
             # protect against ill-formatted email_from when formataddr was used on an already formatted email # noqa: B950
-            emails_from = tools.email_split_and_format(mail.email_from)
+            emails_from = tools.email_split_and_format_normalize(mail.email_from)
             email_from = emails_from[0] if emails_from else mail.email_from
 
             # build an RFC2822 email.message.Message object and send it without queuing
diff --git a/mail_composer_cc_bcc/tests/test_mail_cc_bcc.py b/mail_composer_cc_bcc/tests/test_mail_cc_bcc.py
index d8ebefcfe2..36bf2005cd 100644
--- a/mail_composer_cc_bcc/tests/test_mail_cc_bcc.py
+++ b/mail_composer_cc_bcc/tests/test_mail_cc_bcc.py
@@ -14,6 +14,7 @@
     "d52cb36b88b33abc9556f7be6718d93f",
     "461467cd5b356072fc054468c75f6e26",
     "5d1ab352416f5074e131f35f20098d5b",
+    "46172c91183f2cb50b22a6b3b5e3869b",
 ]