6 files changed, 19 insertions, 5 deletions
diff --git a/program/steps/mail/check_recent.inc b/program/steps/mail/check_recent.inc
index 61693b4ed..4befbf275 100644
--- a/program/steps/mail/check_recent.inc
+++ b/program/steps/mail/check_recent.inc
@@ -75,13 +75,15 @@ foreach ($a_mailboxes as $mbox_name) {
         if (!empty($_GET['_quota']))
             $OUTPUT->command('set_quota', rcmail_quota_content());
 
+        $OUTPUT->set_env('exists', $RCMAIL->storage->count($mbox_name, 'EXISTS'));
+
         // "No-list" mode, don't get messages
         if (empty($_GET['_list']))
             continue;
 
         // get overall message count; allow caching because rcube_storage::folder_status() did a refresh
         $list_mode = $RCMAIL->storage->get_threading() ? 'THREADS' : 'ALL';
-        $all_count = $RCMAIL->storage->count(null, $list_mode, false, false);
+        $all_count = $RCMAIL->storage->count($mbox_name, $list_mode, false, false);
         $page      = $RCMAIL->storage->get_page();
         $page_size = $RCMAIL->storage->get_pagesize();
 
diff --git a/program/steps/mail/compose.inc b/program/steps/mail/compose.inc
index d181a72e6..d764f5289 100644
--- a/program/steps/mail/compose.inc
+++ b/program/steps/mail/compose.inc
@@ -455,6 +455,16 @@ function rcmail_identity_select($MESSAGE, $identities, $compose_mode)
     }
   }
 
+  // Fallback using Envelope-To
+  if ($from_idx === null && ($envelope_to = $MESSAGE->headers->others['envelope-to'])) {
+    foreach ($identities as $idx => $ident) {
+      if (in_array($ident['email_ascii'], (array)$envelope_to)) {
+        $from_idx = $idx;
+        break;
+      }
+    }
+  }
+
   return $identities[$from_idx !== null ? $from_idx : $default_identity];
 }
 
diff --git a/program/steps/mail/folders.inc b/program/steps/mail/folders.inc
index c56c914cd..574d6e975 100644
--- a/program/steps/mail/folders.inc
+++ b/program/steps/mail/folders.inc
@@ -65,6 +65,7 @@ else if ($RCMAIL->action == 'purge')
             if (!empty($_REQUEST['_reload'])) {
                 $OUTPUT->set_env('messagecount', 0);
                 $OUTPUT->set_env('pagecount', 0);
+                $OUTPUT->set_env('exists', 0);
                 $OUTPUT->command('message_list.clear');
                 $OUTPUT->command('set_rowcount', rcmail_get_messagecount_text(), $mbox);
                 $OUTPUT->command('set_unread_count', $mbox, 0);
diff --git a/program/steps/mail/list.inc b/program/steps/mail/list.inc
index b433f81fc..b8c3ee021 100644
--- a/program/steps/mail/list.inc
+++ b/program/steps/mail/list.inc
@@ -95,6 +95,7 @@ $OUTPUT->set_env('messagecount', $count);
 $OUTPUT->set_env('pagecount', $pages);
 $OUTPUT->set_env('threading', $threading);
 $OUTPUT->set_env('current_page', $count ? $RCMAIL->storage->get_page() : 1);
+$OUTPUT->set_env('exists', $RCMAIL->storage->count($mbox_name, 'EXISTS'));
 $OUTPUT->command('set_rowcount', rcmail_get_messagecount_text($count), $mbox_name);
 $OUTPUT->command('set_mailboxname', rcmail_get_mailbox_name_text());
 
diff --git a/program/steps/mail/move_del.inc b/program/steps/mail/move_del.inc
index da43b4000..3e2252683 100644
--- a/program/steps/mail/move_del.inc
+++ b/program/steps/mail/move_del.inc
@@ -38,7 +38,7 @@ if ($RCMAIL->action=='moveto' && !empty($_POST['_uid']) && strlen($_POST['_targe
 
     if (!$moved) {
         // send error message
-	    if ($_POST['_from'] != 'show')
+        if ($_POST['_from'] != 'show')
             $OUTPUT->command('list_mailbox');
         rcmail_display_server_error('errormoving');
         $OUTPUT->send();
@@ -59,7 +59,7 @@ else if ($RCMAIL->action=='delete' && !empty($_POST['_uid'])) {
 
     if (!$del) {
         // send error message
-	    if ($_POST['_from'] != 'show')
+        if ($_POST['_from'] != 'show')
             $OUTPUT->command('list_mailbox');
         rcmail_display_server_error('errordeleting');
         $OUTPUT->send();
@@ -111,6 +111,7 @@ else
   $OUTPUT->set_env('messagecount', $msg_count);
   $OUTPUT->set_env('current_page', $page);
   $OUTPUT->set_env('pagecount', $pages);
+  $OUTPUT->set_env('exists', $RCMAIL->storage->count($mbox, 'EXISTS', true));
 
   // update mailboxlist
   $mbox = $RCMAIL->storage->get_folder();
@@ -144,5 +145,3 @@ else
 
 // send response
 $OUTPUT->send();
-
-
diff --git a/program/steps/mail/search.inc b/program/steps/mail/search.inc
index db5424b3b..f9b8f9e67 100644
--- a/program/steps/mail/search.inc
+++ b/program/steps/mail/search.inc
@@ -143,5 +143,6 @@ else {
 $OUTPUT->set_env('search_request', $search_str ? $search_request : '');
 $OUTPUT->set_env('messagecount', $count);
 $OUTPUT->set_env('pagecount', ceil($count/$RCMAIL->storage->get_pagesize()));
+$OUTPUT->set_env('exists', $RCMAIL->storage->count($mbox_name, 'EXISTS'));
 $OUTPUT->command('set_rowcount', rcmail_get_messagecount_text($count, 1), $mbox);
 $OUTPUT->send();