diff --git a/Classes/Controller/MailController.php b/Classes/Controller/MailController.php
index 0bbcb5e844ddc013c4f53a41737bf9223716dc7a..e5f11ac0547facba5adf9b73a02dfd6fe150e920 100644
--- a/Classes/Controller/MailController.php
+++ b/Classes/Controller/MailController.php
@@ -261,7 +261,6 @@ class MailController extends ActionController {
 		$this->addFlashMessage($message, '', FlashMessage::OK);
 
 		if (!$this->request->hasArgument('saveOnly')) {
-
 			if (!filter_var($parameters['emailAddress'], FILTER_VALIDATE_EMAIL)) {
 				$arguments = $this->request->getArguments();
 				$this->redirect('index', NULL, NULL, $arguments);
diff --git a/Classes/Service/MailTemplateService.php b/Classes/Service/MailTemplateService.php
index df4be76b82762aceb7a5d906ff1396ce0a699d18..daa160313247352188cb274083295c209bad6f4d 100644
--- a/Classes/Service/MailTemplateService.php
+++ b/Classes/Service/MailTemplateService.php
@@ -245,7 +245,7 @@ class MailTemplateService {
 	 * @throws \BadFunctionCallException
 	 * @throws \TYPO3\CMS\Extbase\Persistence\Exception\IllegalObjectTypeException
 	 */
-	public function sendEmail($isPreview = FALSE) {
+	public function sendEmail($isPreview = FALSE): bool {
 		if (TYPO3_MODE === 'FE') {
 			/** @var TypoScriptFrontendController $tsfe */
 			$tsfe = $GLOBALS['TSFE'];
diff --git a/Resources/Private/Templates/Mail/Index.html b/Resources/Private/Templates/Mail/Index.html
index e45169a6ccdd17ea65a68c02f5a3c26ed9e70d07..f815135063edbac1b97e0b05bf4bed6417f01dd6 100644
--- a/Resources/Private/Templates/Mail/Index.html
+++ b/Resources/Private/Templates/Mail/Index.html
@@ -14,7 +14,7 @@
 					<p>{templateDescription}</p>
 				</div>
 				<div class=" col-md-2">
-					<f:link.action class="reset-btn reset-all-btn btn-danger btn" style="width: 100%;" action="reset" arguments="{template: selectedTemplateKey, extensionKey: selectedTemplate.extension}">{f:translate(key:'backend.button_reset_all')}</f:link.action>
+					<f:link.action class="reset-btn reset-all-btn btn-danger btn col-md-12"  action="reset" arguments="{template: selectedTemplateKey, extensionKey: selectedTemplate.extension}">{f:translate(key:'backend.button_reset_all')}</f:link.action>
 				</div>
 			</div>
 			<div class="col-md-12 row">