diff --git a/.github/workflows/greetings.yml b/.github/workflows/greetings.yml
index adb8716..75cb759 100755
--- a/.github/workflows/greetings.yml
+++ b/.github/workflows/greetings.yml
@@ -9,5 +9,5 @@ jobs:
     - uses: actions/first-interaction@v1
       with:
         repo-token: ${{ secrets.GITHUB_TOKEN }}
-        issue-message: 'Thank you for createing this issue. We will check it as soon as possible.'
+        issue-message: 'Thank you for creating this issue. We will check it as soon as possible.'
         pr-message: 'Thank you for your pull request. We will check it as soon as possible.'
diff --git a/Theme/Backend/mail-dashboard.tpl.php b/Theme/Backend/mail-dashboard.tpl.php
index 5251c8e..66a6e31 100755
--- a/Theme/Backend/mail-dashboard.tpl.php
+++ b/Theme/Backend/mail-dashboard.tpl.php
@@ -31,7 +31,7 @@ echo $this->data['nav']->render(); ?>
 
 <div class="row">
     <div class="col-xs-12 col-md-9">
-        <div class="portlet">
+        <section class="portlet">
             <div class="portlet-head"><?= $this->getHtml('Messages'); ?><i class="g-icon download btn end-xs">download</i></div>
             <table id="profileList" class="default sticky">
             <thead>
@@ -56,12 +56,12 @@ echo $this->data['nav']->render(); ?>
             <tr>
                 <td colspan="5" class="empty"><?= $this->getHtml('Empty', '0', '0'); ?>
             <?php endif; ?>
-        </table>
-        <div class="portlet-foot">
-                <a tabindex="0" class="button" href="<?= UriFactory::build($previous); ?>"><?= $this->getHtml('Previous', '0', '0'); ?></a>
-                <a tabindex="0" class="button" href="<?= UriFactory::build($next); ?>"><?= $this->getHtml('Next', '0', '0'); ?></a>
+            </table>
+            <div class="portlet-foot">
+                    <a tabindex="0" class="button" href="<?= UriFactory::build($previous); ?>"><?= $this->getHtml('Previous', '0', '0'); ?></a>
+                    <a tabindex="0" class="button" href="<?= UriFactory::build($next); ?>"><?= $this->getHtml('Next', '0', '0'); ?></a>
             </div>
-        </div>
+        </section>
     </div>
 
     <div class="col-xs-12 col-md-3">
@@ -69,16 +69,16 @@ echo $this->data['nav']->render(); ?>
             <a tabindex="0" class="button" href="<?= UriFactory::build('{/base}/messages/mail/create'); ?>"><?= $this->getHtml('Create', '0', '0'); ?></a>
         </div>
 
-        <div class="portlet">
+        <section class="portlet">
             <div class="portlet-head"><?= $this->getHtml('Channels'); ?></div>
             <div class="portlet-body">
             </div>
-        </div>
+        </section>
 
-        <div class="portlet">
+        <section class="portlet">
             <div class="portlet-head"><?= $this->getHtml('Chat'); ?></div>
             <div class="portlet-body">
             </div>
-        </div>
+        </section>
     </div>
 </div>
diff --git a/Theme/Backend/mail-inbox.tpl.php b/Theme/Backend/mail-inbox.tpl.php
index 2789115..0b95566 100644
--- a/Theme/Backend/mail-inbox.tpl.php
+++ b/Theme/Backend/mail-inbox.tpl.php
@@ -31,7 +31,7 @@ echo $this->data['nav']->render(); ?>
 
 <div class="row">
     <div class="col-xs-12 col-md-9">
-        <div class="portlet">
+        <section class="portlet">
             <div class="portlet-head"><?= $this->getHtml('Messages'); ?><i class="g-icon download btn end-xs">download</i></div>
             <table id="profileList" class="default sticky">
             <thead>
@@ -56,12 +56,12 @@ echo $this->data['nav']->render(); ?>
             <tr>
                 <td colspan="5" class="empty"><?= $this->getHtml('Empty', '0', '0'); ?>
             <?php endif; ?>
-        </table>
-        <div class="portlet-foot">
+            </table>
+            <div class="portlet-foot">
                 <a tabindex="0" class="button" href="<?= UriFactory::build($previous); ?>"><?= $this->getHtml('Previous', '0', '0'); ?></a>
                 <a tabindex="0" class="button" href="<?= UriFactory::build($next); ?>"><?= $this->getHtml('Next', '0', '0'); ?></a>
             </div>
-        </div>
+        </section>
     </div>
 
     <div class="col-xs-12 col-md-3">
@@ -69,25 +69,25 @@ echo $this->data['nav']->render(); ?>
             <a tabindex="0" class="button" href="<?= UriFactory::build('{/base}/messages/mail/create'); ?>"><?= $this->getHtml('Create', '0', '0'); ?></a>
         </div>
 
-        <div class="portlet">
+        <section class="portlet">
             <div class="portlet-head"><?= $this->getHtml('Channels'); ?></div>
             <div class="portlet-body">
                 asdf
             </div>
-        </div>
+        </section>
 
-        <div class="portlet">
+        <section class="portlet">
             <div class="portlet-head"><?= $this->getHtml('Email'); ?></div>
             <div class="portlet-body">
                 asdf
             </div>
-        </div>
+        </section>
 
-        <div class="portlet">
+        <section class="portlet">
             <div class="portlet-head"><?= $this->getHtml('Chat'); ?></div>
             <div class="portlet-body">
                 asdf
             </div>
-        </div>
+        </section>
     </div>
 </div>
diff --git a/Theme/Backend/mail-template.tpl.php b/Theme/Backend/mail-template.tpl.php
index 330e684..d490b0b 100644
--- a/Theme/Backend/mail-template.tpl.php
+++ b/Theme/Backend/mail-template.tpl.php
@@ -22,8 +22,12 @@ echo $this->data['nav']->render(); ?>
 <div class="tabview tab-2 right">
     <div class="box">
         <ul class="tab-links">
-            <?php foreach ($mail->l11n as $idx => $l11n) : ?>
-            <li<?= $idx === 1 ? ' class="active"' : ''; ?>><label for="c-tab-<?= $idx; ?>"><?= $this->printHtml(ISO639Enum::getBy2Code($l11n->language)); ?></label>
+            <?php
+            $c = 0;
+            foreach ($mail->l11n as $idx => $l11n) :
+                ++$c;
+            ?>
+            <li<?= $c === 1 ? ' class="active"' : ''; ?>><label for="c-tab-<?= $idx; ?>"><?= $this->printHtml(ISO639Enum::getBy2Code($l11n->language)); ?></label>
             <?php endforeach; ?>
         </ul>
     </div>
@@ -33,43 +37,43 @@ echo $this->data['nav']->render(); ?>
         <div class="tab">
             <div class="row">
                 <div class="col-xs-12">
-                    <div class="portlet">
+                    <section class="portlet">
                         <div class="portlet-body">
                             <input type="text" value="<?= $this->printHtml($l11n->subject); ?>">
                         </div>
-                    </div>
+                    </section>
                 </div>
             </div>
 
             <div class="row">
                 <div class="col-xs-12">
-                    <div class="portlet">
+                    <section class="portlet">
                         <div class="portlet-body">
                             <pre><?= $this->printHtml(HtmlFormatter::format($l11n->body)); ?></pre>
                         </div>
-                    </div>
+                    </section>
                 </div>
             </div>
 
             <!--
             <div class="row">
                 <div class="col-xs-12">
-                    <div class="portlet">
+                    <section class="portlet">
                         <div class="portlet-body">
                             <?= $l11n->body; ?>
                         </div>
-                    </div>
+                    </section>
                 </div>
             </div>
             -->
 
             <div class="row">
                 <div class="col-xs-12">
-                    <div class="portlet">
+                    <section class="portlet">
                         <div class="portlet-body">
                             <pre><?= $l11n->bodyAlt; ?></pre>
                         </div>
-                    </div>
+                    </section>
                 </div>
             </div>
         </div>
diff --git a/Theme/Backend/mail-templates.tpl.php b/Theme/Backend/mail-templates.tpl.php
index 9fbe902..c009772 100755
--- a/Theme/Backend/mail-templates.tpl.php
+++ b/Theme/Backend/mail-templates.tpl.php
@@ -23,7 +23,7 @@ echo $this->data['nav']->render(); ?>
 
 <div class="row">
     <div class="col-xs-12">
-        <div class="portlet">
+        <section class="portlet">
             <div class="portlet-head"><?= $this->getHtml('Templates'); ?><i class="g-icon download btn end-xs">download</i></div>
             <table id="profileList" class="default sticky">
                 <thead>
@@ -45,7 +45,7 @@ echo $this->data['nav']->render(); ?>
                     <td colspan="5" class="empty"><?= $this->getHtml('Empty', '0', '0'); ?>
                 <?php endif; ?>
             </table>
-        </div>
+        </section>
         <div class="box">
             <a tabindex="0" class="button" href="<?= UriFactory::build($previous); ?>"><?= $this->getHtml('Previous', '0', '0'); ?></a>
             <a tabindex="0" class="button" href="<?= UriFactory::build($next); ?>"><?= $this->getHtml('Next', '0', '0'); ?></a>