diff --git a/doc/_templates/indexsidebar.html b/doc/_templates/indexsidebar.html
index a61725f5f..a4bfb8276 100644
--- a/doc/_templates/indexsidebar.html
+++ b/doc/_templates/indexsidebar.html
@@ -3,11 +3,14 @@
 <p>Get Sphinx from the <a href="http://pypi.python.org/pypi/Sphinx">Python Package
 Index</a>, or install it with:</p>
 <pre>easy_install Sphinx</pre>
-<p>&nbsp;</p>
 
 <h3>Questions? Suggestions?</h3>
 
-<p>Join the <a href="http://groups.google.com/group/sphinx-dev">Google group</a>
-or come to the <tt>#python-docs</tt> channel on FreeNode.</p>
+<p>Join the <a href="http://groups.google.com/group/sphinx-dev">Google group</a>:</p>
+<form action="http://groups.google.com/group/sphinx-dev/boxsubscribe" style="padding-left: 1em">
+  <input type="text" name="email" value="your@email"/>
+  <input type="submit" name="sub" value="Subscribe" />
+</form>
+<p>or come to the <tt>#python-docs</tt> channel on FreeNode.</p>
 <p>You can also open a bug at Python's <a href="http://bugs.python.org/">bug
 tracker</a>, using the "Documentation tools" category.</p>