From 7596e7a495b75af455575474f733013149109558 Mon Sep 17 00:00:00 2001
From: Francesco Gazzetta <fgaz@fgaz.me>
Date: Tue, 28 May 2019 16:47:16 +0200
Subject: [PATCH] nixos/mlmmj: add more list headers

since we already add a couple of default headers, it makes sense to have
a sensible default and add the unsubscribe header and friends
---
 nixos/modules/services/mail/mlmmj.nix | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/nixos/modules/services/mail/mlmmj.nix b/nixos/modules/services/mail/mlmmj.nix
index d58d93c4214..bc3e84ffba3 100644
--- a/nixos/modules/services/mail/mlmmj.nix
+++ b/nixos/modules/services/mail/mlmmj.nix
@@ -16,7 +16,14 @@ let
   alias = domain: list: "${list}: \"|${pkgs.mlmmj}/bin/mlmmj-receive -L ${listDir domain list}/\"";
   subjectPrefix = list: "[${list}]";
   listAddress = domain: list: "${list}@${domain}";
-  customHeaders = domain: list: [ "List-Id: ${list}" "Reply-To: ${list}@${domain}" ];
+  customHeaders = domain: list: [
+    "List-Id: ${list}"
+    "Reply-To: ${list}@${domain}"
+    "List-Post: <mailto:${list}@${domain}>"
+    "List-Help: <mailto:${list}+help@${domain}>"
+    "List-Subscribe: <mailto:${list}+subscribe@${domain}>"
+    "List-Unsubscribe: <mailto:${list}+unsubscribe@${domain}>"
+  ];
   footer = domain: list: "To unsubscribe send a mail to ${list}+unsubscribe@${domain}";
   createList = d: l:
     let ctlDir = listCtl d l; in