diff --git a/handbook/paperwork.html b/handbook/paperwork.html
index f77e876ee..f97959c97 100644
--- a/handbook/paperwork.html
+++ b/handbook/paperwork.html
@@ -37,6 +37,9 @@ has been received by the expo treasurer. The amount of the deposit depends on th
 <p>If you are late paying the deposit you may need to pay your entire expected cost, not just the deposit, before you can attend. 
 The expo treasurer will tell you what is required.
 
+<h3>Email</h3>
+<p>While every expo has a number of informal communication channels (Signal, Matrix, Instagram, UKCaving blog etc.), formal communications use email so you need to subscribe to <a href="https://lists.wookware.org/cgi-bin/mailman/listinfo/expo">wookware Expo mail list</a>.
+  
 <h2 id="insurance">Insurance</h2>
 <p>A <b><font style="color:red">very strong suggestion</font></b> for expoers is that everyone gets insurance in case of a rescue; this can be ruinously expensive 
 (running to millions of euros for multi-day rescues!) and so  you <b><font style="color:red">almost certainly need to get cover</font></b> for this.