diff --git a/src/views/emails.html b/src/views/emails.html
index c678ac222..6802570c0 100644
--- a/src/views/emails.html
+++ b/src/views/emails.html
@@ -59,6 +59,8 @@
         <h4 class="modal-title">Change Maximum Email Size</h4>
       </div>
       <div class="modal-body">
+        <div>Changing the maximum email message size requires a restart of the mail server.</div>
+        <br>
         <form name="maxEmailSizeChangeForm" role="form" novalidate ng-submit="maxEmailSize.submit()" autocomplete="off">
           <div class="form-group">
             <label class="control-label">Maximum size in megabytes : <b>{{ maxEmailSize.size | prettyDiskSize }}</b></label>