diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst
index 28e2f94..4f5915d 100644
--- a/user_guide_src/source/changelog.rst
+++ b/user_guide_src/source/changelog.rst
@@ -138,6 +138,7 @@
    -  CI_Loader::_ci_autoloader() is now a protected method.
    -  Added custom filename to Email::attach() as $this->email->attach($filename, $disposition, $newname).
    -  Added possibility to send attachment as buffer string in Email::attach() as $this->email->attach($buffer, $disposition, $newname, $mime).
+   -  Added third parameter $return_path for method Email::from().
    -  :doc:`Cart library <libraries/cart>` changes include:
 	 -  It now auto-increments quantity's instead of just resetting it, this is the default behaviour of large e-commerce sites.
 	 -  Product Name strictness can be disabled via the Cart Library by switching "$product_name_safe".
diff --git a/user_guide_src/source/libraries/email.rst b/user_guide_src/source/libraries/email.rst
index f99eb91..8d2549d 100644
--- a/user_guide_src/source/libraries/email.rst
+++ b/user_guide_src/source/libraries/email.rst
@@ -117,6 +117,13 @@
 
 	$this->email->from('you@example.com', 'Your Name');
 
+::
+
+	$this->email->from('you@example.com', 'Your Name', 'returned_emails@example.com');
+	
+Third parameter is redirect for undelivered emails (may not be configured with
+protocol 'smtp').
+
 $this->email->reply_to()
 -------------------------