snapshot: preserve extended branding layer and branding UI polish

backend/workflows/emailing.py

@@ -1,6 +1,7 @@
 from django.conf import settings
 from django.core.mail import EmailMessage, get_connection
 
+from .branding import get_branded_from_email
 from .models import SystemEmailConfig, WorkflowConfig
 
 
@@ -66,7 +67,7 @@ def send_system_email(
     msg = EmailMessage(
         subject=subject,
         body=body,
-        from_email=(from_email or smtp['from_email']),
+        from_email=get_branded_from_email(from_email or smtp['from_email']) or (from_email or smtp['from_email']),
         to=to,
         connection=connection,
     )