---
 init.h    |    7 +++++++
 options.h |    1 +
 send.c    |   12 ++++++++++--
 3 files changed, 18 insertions(+), 2 deletions(-)

--- init.h
+++ init.h	2017-09-11 11:36:34.666630359 +0000
@@ -3135,6 +3135,13 @@ struct Option MuttVars[] = {
   ** .pp
   ** Also see the $$force_name variable.
   */
+  { "send_group_reply_to",     DT_BOOL, R_NONE, OPT_SENDGROUP_REPLYTO, 0 },
+  /*
+  ** .pp
+  ** This variable controls how group replies are done.
+  ** When set, all recepients listet in "To:" are set in the
+  ** "To:" header again, else in the "CC", which is the default.
+  */
   { "score",            DT_BOOL, R_NONE, OPT_SCORE, 1 },
   /*
   ** .pp
--- options.h
+++ options.h	2017-09-11 11:37:05.418065746 +0000
@@ -160,6 +160,7 @@ enum GlobalBool
   OPT_SAVE_ADDRESS,
   OPT_SAVE_EMPTY,
   OPT_SAVE_NAME,
+  OPT_SENDGROUP_REPLYTO,
   OPT_SCORE,
 #ifdef USE_SIDEBAR
   OPT_SIDEBAR_VISIBLE,
--- send.c
+++ send.c	2017-09-11 11:37:26.009687657 +0000
@@ -637,8 +637,16 @@ int mutt_fetch_recips(struct Envelope *o
     if ((flags & SENDGROUPREPLY) && (!in->mail_followup_to || hmfupto != MUTT_YES))
     {
       /* if(!mutt_addr_is_user(in->to)) */
-      rfc822_append(&out->cc, in->to, 1);
-      rfc822_append(&out->cc, in->cc, 1);
+      if (option (OPT_SENDGROUP_REPLYTO))
+      {
+        rfc822_append(&out->to, in->to, 0);
+        rfc822_append(&out->cc, in->cc, 1);
+      }          
+      else
+      {
+        rfc822_append(&out->cc, in->to, 1);
+        rfc822_append(&out->cc, in->cc, 1);
+      }
     }
   }
   return 0;