attach files by absolute url
diff --git a/user_guide_src/source/libraries/email.rst b/user_guide_src/source/libraries/email.rst
index 8e38003..476f113 100644
--- a/user_guide_src/source/libraries/email.rst
+++ b/user_guide_src/source/libraries/email.rst
@@ -259,6 +259,10 @@
$this->email->attach('image.jpg', 'inline');
+You can use absolute url::
+
+ $this->email->attach('http://example.com/filename.pdf');
+
If you'd like to use a custom file name, you can use the third paramater::
$this->email->attach('filename.pdf', 'attachment', 'report.pdf');