Martin Brennan f0c10edd28
FIX: Remove List-Unsubscribe header if using group SMTP (#13448)
The other mailing list headers were removed if using
group SMTP in ff6114d83f9c6203dee426968850023b77d1e031
2021-06-21 09:33:32 +10:00
..
2019-10-16 14:28:04 -04:00