diff --git a/emailtracking/.idea/workspace.xml b/emailtracking/.idea/workspace.xml
index 4cf7b5d..2f15ba1 100644
--- a/emailtracking/.idea/workspace.xml
+++ b/emailtracking/.idea/workspace.xml
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$USER_HOME$/.subversion
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\ No newline at end of file
diff --git a/emailtracking/php/plugin.emailtracking.php b/emailtracking/php/plugin.emailtracking.php
index bd7d906..6732a17 100644
--- a/emailtracking/php/plugin.emailtracking.php
+++ b/emailtracking/php/plugin.emailtracking.php
@@ -86,7 +86,7 @@ class Pluginemailtracking extends Plugin {
// add the tracking html tags to the body
$trackingHTML = '';
- $trackingHTML .= '';
+ $trackingHTML .= '';
// stream the body and add the tracking changes!
$messageStream = mapi_openproperty($message, PR_HTML, IID_IStream, 0, 0);
diff --git a/emailtracking/php/track.php b/emailtracking/php/track.php
index 8c7718f..293800d 100644
--- a/emailtracking/php/track.php
+++ b/emailtracking/php/track.php
@@ -27,6 +27,10 @@ if(!empty($trackingID) && $type !== "none") {
// log it to db
$dbObj->addLog($trackingID, $data);
+
+ // respond transparent 1x1 image
+ @header('Content-Type: image/png');
+ echo base64_decode('iVBORw0KGgoAAAANSUhEUgAAAAEAAAABAQMAAAAl21bKAAAAA1BMVEUAAACnej3aAAAAAXRSTlMAQObYZgAAAApJREFUCNdjYAAAAAIAAeIhvDMAAAAASUVORK5CYII=');
} else {
echo "Powerful you have become, the dark side I sense in you.";
-}
\ No newline at end of file
+}