--- a/client/messages.xml
+++ b/client/messages.xml
@@ -151,16 +151,17 @@
       ]]></xbl:handler>
     </xbl:handlers>
   </xbl:binding>
 
   <xbl:binding id="reply">
     <xbl:template>
       <div class="author">
         <span id="from" class="name"/>
+        <span>, </span>
         <span id="date" class="data"/>
       </div>
       <div id="snippet" class="body"/>
     </xbl:template>
     <xbl:resources>
       <xbl:style><![CDATA[
 /* REPLY */
 :bound-element { display: list-item; list-style: none; margin: 0.5em 0em; }