diff --git a/data/web/templates/modals/mailbox.twig b/data/web/templates/modals/mailbox.twig
index e94f36516..b766b40db 100644
--- a/data/web/templates/modals/mailbox.twig
+++ b/data/web/templates/modals/mailbox.twig
@@ -689,7 +689,7 @@
           </div>
           <hr>
           <div class="row mb-4">
-            <label class="control-label col-sm-2 text-sm-end text-sm-end">{{ lang.edit.mta_sts }}</label>
+            <label class="control-label col-sm-2 text-sm-end">{{ lang.edit.mta_sts }}</label>
             <div class="col-sm-10">
               <div class="form-check mb-3">
                 <input type="hidden" value="0" name="mta_sts">
@@ -697,7 +697,7 @@
                 <p><small class="text-muted">{{ lang.edit.mta_sts_template_info|raw }}</small></p>
               </div>
               <div class="row mb-2">
-                <label class="control-label col-sm-3 text-sm-end text-sm-end" for="mta_sts_version">{{ lang.edit.mta_sts_version }}</label>
+                <label class="control-label col-sm-3 text-sm-end" for="mta_sts_version">{{ lang.edit.mta_sts_version }}</label>
                 <div class="col-sm-9">
                   <select data-style="btn btn-light" class="form-control" name="mta_sts_version">
                     <option value="stsv1" selected>STSv1</option>
@@ -705,7 +705,7 @@
                 </div>
               </div>
               <div class="row mb-2">
-                <label class="control-label col-sm-3 text-sm-end text-sm-end" for="mta_sts_mode">{{ lang.edit.mta_sts_mode }}</label>
+                <label class="control-label col-sm-3 text-sm-end" for="mta_sts_mode">{{ lang.edit.mta_sts_mode }}</label>
                 <div class="col-sm-9">
                   <select data-style="btn btn-light" class="form-control" name="mta_sts_mode">
                     <option value="enforce" selected>enforce</option>
@@ -715,13 +715,13 @@
                 </div>
               </div>
               <div class="row mb-2">
-                <label class="control-label col-sm-3 text-sm-end text-sm-end" for="mta_sts_max_age">{{ lang.edit.mta_sts_max_age }}</label>
+                <label class="control-label col-sm-3 text-sm-end" for="mta_sts_max_age">{{ lang.edit.mta_sts_max_age }}</label>
                 <div class="col-sm-9">
                   <input type="number" class="form-control" name="mta_sts_max_age" value="604800">
                 </div>
               </div>
               <div class="row mb-2">
-                <label class="control-label col-sm-3 text-sm-end text-sm-end" for="mta_sts_mx">{{ lang.edit.mta_sts_mx }}</label>
+                <label class="control-label col-sm-3 text-sm-end" for="mta_sts_mx">{{ lang.edit.mta_sts_mx }}</label>
                 <div class="col-sm-9">
                   <textarea autocorrect="off" autocapitalize="none" class="form-control" rows="3" name="mta_sts_mx"></textarea>
                   <small class="text-muted">{{ lang.edit.mta_sts_mx_notice|raw }}</small>