diff --git a/core/admin/mailu/ui/templates/sidebar.html b/core/admin/mailu/ui/templates/sidebar.html
index 6145bef3..a57a2abe 100644
--- a/core/admin/mailu/ui/templates/sidebar.html
+++ b/core/admin/mailu/ui/templates/sidebar.html
@@ -1,11 +1,11 @@
 <div class="sidebar text-sm">
   {%- if current_user.is_authenticated %}
-  <div class="user-panel mt-3 pb-3 mb-3 d-flex">
+  <div class="user-panel mt-3 pb-3 mb-3 d-flex" title="{{ current_user }}">
     <div class="image">
       <div class="div-circle elevation-2"><i class="fa fa-user text-lg text-dark"></i></div>
     </div>
     <div class="info">
-      <a href="{{ url_for('.user_settings') }}" class="d-block">{{ current_user }}</a>
+      <a href="{{ url_for('.user_settings') }}" class="d-block">{{ current_user.displayed_name or current_user }}</a>
     </div>
   </div>
   {%- endif %}
diff --git a/core/dovecot/conf/dovecot.conf b/core/dovecot/conf/dovecot.conf
index 6b97a086..ed2c4cdf 100644
--- a/core/dovecot/conf/dovecot.conf
+++ b/core/dovecot/conf/dovecot.conf
@@ -100,6 +100,7 @@ service auth-worker {
 protocol imap {
   mail_plugins = $mail_plugins imap_quota imap_sieve
   mail_max_userip_connections = 20
+  imap_idle_notify_interval = 29mins
 }
 
 protocol pop3 {
diff --git a/towncrier/newsfragments/2211.misc b/towncrier/newsfragments/2211.misc
new file mode 100644
index 00000000..61eb145e
--- /dev/null
+++ b/towncrier/newsfragments/2211.misc
@@ -0,0 +1 @@
+Set imap_idle_notify_interval to 29 mins (see rfc2177) to ensure we use IMAP IDLE effectively