From f40ecb33f881acbb9d46e6543dffd1993f6dd344 Mon Sep 17 00:00:00 2001
From: Dejan Strbac <dejan.strbac@gmail.com>
Date: Wed, 23 Dec 2015 19:02:56 +0100
Subject: [PATCH] add extra headers

---
 lib/mailex/email.ex  | 2 +-
 lib/mailex/render.ex | 3 +++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/lib/mailex/email.ex b/lib/mailex/email.ex
index 504db55..d3e1ea0 100644
--- a/lib/mailex/email.ex
+++ b/lib/mailex/email.ex
@@ -1,5 +1,5 @@
 defmodule Mailex.Email do
 
-  defstruct subject: nil, from: nil, reply_to: nil, to: nil, cc: nil, bcc: nil, attachments: nil, html: nil, text: nil
+  defstruct subject: nil, from: nil, reply_to: nil, to: nil, cc: nil, bcc: nil, headers: nil, attachments: nil, html: nil, text: nil
 
 end
diff --git a/lib/mailex/render.ex b/lib/mailex/render.ex
index 64d9b30..be78136 100644
--- a/lib/mailex/render.ex
+++ b/lib/mailex/render.ex
@@ -121,6 +121,9 @@ defmodule Mailex.Render do
     if email.to && (length(email.to) > 0), do:
       headers = [ { "To", email.to |> stringify_addresses } | headers ]
 
+    if email.headers && (length(email.headers) > 0), do:
+      headers = headers ++ email.headers
+
     [ { "From",    email.from |> stringify_addresses },
       { "Subject", email.subject || "" }  | headers ]
   end