1 files changed, 4 insertions, 0 deletions
diff --git a/roundcubemail/program/include/rcmail.php b/roundcubemail/program/include/rcmail.php
index f109c16fd..96937b58a 100644
--- a/roundcubemail/program/include/rcmail.php
+++ b/roundcubemail/program/include/rcmail.php
@@ -349,6 +349,10 @@ class rcmail
     if ($this->config->get('enable_caching')) {
       $this->imap->set_caching(true);
     }
+    
+    if ($this->config->get('enable_thread_caching')) {
+      $this->imap->set_thread_caching(true);
+    }
 
     // set pagesize from config
     $this->imap->set_pagesize($this->config->get('pagesize', 50));