--- PATCHES.orig	2017-09-04 15:19:31.167205000 -0400
+++ PATCHES	2017-09-04 15:19:31.168636000 -0400
@@ -0,0 +1 @@
+patch-1.5.7.ust.maildir-mtime.2
--- browser.c.orig	2017-09-04 15:19:27.714342000 -0400
+++ browser.c	2017-09-04 15:19:31.178678000 -0400
@@ -32,6 +32,7 @@
 #ifdef USE_IMAP
 #include "imap.h"
 #endif
+#include "mx.h"
 
 #include <stdlib.h>
 #include <dirent.h>
@@ -413,6 +414,21 @@
     menu->data = state->entry;
 }
 
+static void check_maildir_times (BUFFY *buf, struct stat *st)
+{
+  char buffer[_POSIX_PATH_MAX + SHORT_STRING];
+  struct stat s;
+
+  if(!buf || buf->magic != MUTT_MAILDIR)
+    return;
+
+  snprintf (buffer, sizeof (buffer), "%s/tmp", buf->path);
+  if (lstat (buffer, &s) != 0)
+    return;
+
+  st->st_mtime = s.st_mtime;
+}
+
 static int examine_directory (MUTTMENU *menu, struct browser_state *state,
 			      char *d, const char *prefix)
 {
@@ -476,6 +492,7 @@
     tmp = Incoming;
     while (tmp && mutt_strcmp (buffer, tmp->path))
       tmp = tmp->next;
+    check_maildir_times (tmp, &s);
     if (tmp && Context &&
         !mutt_strcmp (tmp->realpath, Context->realpath))
     {
@@ -549,6 +566,7 @@
 	s.st_mtime = st2.st_mtime;
     }
 
+    check_maildir_times (tmp, &s);
     add_folder (menu, state, buffer, &s, tmp);
   }
   while ((tmp = tmp->next));