diff --git a/cps/templates/email_edit.html b/cps/templates/email_edit.html
index 9df0a385..5264ab58 100644
--- a/cps/templates/email_edit.html
+++ b/cps/templates/email_edit.html
@@ -33,7 +33,7 @@
     </div>
     <div class="form-group">
       <label for="mail_from">{{_('From E-mail')}}</label>
-      <input type="text" class="form-control" name="mail_from" id="mail_from" value="{{content.mail_from}}">
+      <input type="text" class="form-control" name="mail_from" id="mail_from" value="{{content.mail_from}}" required>
     </div>
     <label for="mail_size">{{_('Attachment Size Limit')}}</label>
      <div class="form-group input-group">