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-rw-r--r--plugins/show_additional_headers/show_additional_headers.php3
1 files changed, 3 insertions, 0 deletions
diff --git a/plugins/show_additional_headers/show_additional_headers.php b/plugins/show_additional_headers/show_additional_headers.php
index c31c9df6b..7e7c50354 100644
--- a/plugins/show_additional_headers/show_additional_headers.php
+++ b/plugins/show_additional_headers/show_additional_headers.php
@@ -23,6 +23,9 @@ class show_additional_headers extends rcube_plugin
if ($rcmail->action == 'show' || $rcmail->action == 'preview') {
$this->add_hook('imap_init', array($this, 'imap_init'));
$this->add_hook('message_headers_output', array($this, 'message_headers'));
+ } else if ($rcmail->action == '') {
+ // with enabled_caching we're fetching additional headers before show/preview
+ $this->add_hook('imap_init', array($this, 'imap_init'));
}
}