diff --git a/templates/default/documentation.html.ep b/templates/default/documentation.html.ep
index 05e7963..c6ada2b 100644
--- a/templates/default/documentation.html.ep
+++ b/templates/default/documentation.html.ep
@@ -1229,6 +1229,14 @@ systemctl restart vroom.service</pre>
                 An API action was allowed
               </td>
             </tr>
+            <tr>
+              <td>
+                join_notification
+              </td>
+              <td>
+                An email notification was sent because someone joined a room
+              </td>
+            </tr>
           </tbody>
         </table>
       </p>
diff --git a/vroom.pl b/vroom.pl
index 9d9f1e9..9ffc573 100755
--- a/vroom.pl
+++ b/vroom.pl
@@ -2068,8 +2068,11 @@ any '/api' => sub {
     # Send notifications
     my $recipients = $self->get_email_notifications($room->{name});
     foreach my $rcpt (keys %{$recipients}){
-      # TODO: log an event
-      $self->app->log->debug('Sending an email to ' . $recipients->{$rcpt}->{email});
+      $self->log_event(
+        event => 'join_notification',
+        msg   => 'Sending an email to ' . $recipients->{$rcpt}->{email} .
+                 ' to inform that someone joined room ' . $room->{name}
+      );
       my $sent = $self->mail(
         to      => $recipients->{$rcpt}->{email},
         subject => $subj,