diff --git a/Classes/Controller/MailController.php b/Classes/Controller/MailController.php
index b914c8a444c86adebc1fd0d6f32e473912e12a95..808a213d2c3d665c0631ea46e8d6bdceb4763fb8 100644
--- a/Classes/Controller/MailController.php
+++ b/Classes/Controller/MailController.php
@@ -203,6 +203,35 @@ class MailController extends ActionController {
 	 * @throws \TYPO3\CMS\Extbase\Persistence\Exception\UnknownObjectException
 	 */
 	public function sendTestMailAction(array $parameters = []) {
+		foreach ($parameters['templates'] as $parameter) {
+			$ccAddresses = GeneralUtility::trimExplode(',', $parameter['cc']);
+			if (count($ccAddresses) > 0) {
+
+				foreach ($ccAddresses as $ccAddress) {
+					if (!filter_var($ccAddress, FILTER_VALIDATE_EMAIL) && trim($ccAddress) !== '') {
+						$message = LocalizationUtility::translate('backend.error_cc', 'sg_mail');
+						$this->addFlashMessage($message, '', FlashMessage::WARNING);
+
+						$arguments = $this->request->getArguments();
+						$this->redirect('index', NULL, NULL, $arguments);
+					}
+				}
+			}
+
+			$bccAddresses = GeneralUtility::trimExplode(',', $parameter['bcc']);
+			if (count($bccAddresses) > 0) {
+				foreach ($bccAddresses as $bccAddress) {
+					if (!filter_var($bccAddress, FILTER_VALIDATE_EMAIL) && trim($bccAddress) !== '') {
+						$message = LocalizationUtility::translate('backend.error_bcc', 'sg_mail');
+						$this->addFlashMessage($message, '', FlashMessage::WARNING);
+
+						$arguments = $this->request->getArguments();
+						$this->redirect('index', NULL, NULL, $arguments);
+					}
+				}
+			}
+		}
+
 		foreach ($parameters['templates'] as $key => $template) {
 			BackendService::saveTemplate(
 				(int) GeneralUtility::_GP('id'), $parameters['selectedExtension'], $parameters['selectedTemplate'],
diff --git a/Resources/Private/Language/de.locallang.xlf b/Resources/Private/Language/de.locallang.xlf
index 568c5bcfbee36f11eadb155b2a33146f45687834..92ec1cd2a519d5ce3afadc305ea779b82b206454 100644
--- a/Resources/Private/Language/de.locallang.xlf
+++ b/Resources/Private/Language/de.locallang.xlf
@@ -49,6 +49,14 @@
 			<source>Queue Entry Date</source>
 			<target>Erstellungsdatum</target>
 		</trans-unit>
+		<trans-unit id="backend.error_bcc" approved="yes">
+			<source>The bcc addresses are invalid</source>
+			<target>Ungültige bcc Adressen</target>
+		</trans-unit>
+		<trans-unit id="backend.error_cc" approved="yes">
+			<source>The cc addresses are invalid</source>
+			<target>Ungültige cc Adressen</target>
+		</trans-unit>
 		<trans-unit id="backend.failure_mail" approved="yes">
 			<source>There was an error when sending the preview email. Please check your configuration.</source>
 			<target>Ein Fehler ist aufgetreten. Bitte überprüfen Sie die Konfiguration.</target>
diff --git a/Resources/Private/Language/locallang.xlf b/Resources/Private/Language/locallang.xlf
index ea7044a91ac580e1beaa960f003e43f06aa8388d..6166d70d920a25f8683d1c10c2255461980e65cf 100644
--- a/Resources/Private/Language/locallang.xlf
+++ b/Resources/Private/Language/locallang.xlf
@@ -39,6 +39,12 @@
 		<trans-unit id="backend.entry_date">
 			<source>Queue Entry Date</source>
 		</trans-unit>
+		<trans-unit id="backend.error_bcc">
+			<source>The bcc addresses are invalid</source>
+		</trans-unit>
+		<trans-unit id="backend.error_cc">
+			<source>The cc addresses are invalid</source>
+		</trans-unit>
 		<trans-unit id="backend.failure_mail">
 			<source>There was an error when sending the preview email. Please check your configuration.</source>
 		</trans-unit>
diff --git a/Resources/Private/Templates/Queue/Index.html b/Resources/Private/Templates/Queue/Index.html
index 10f444991663b73ed67eaaa8b9d555c77857e14c..a986a7d07f827bad9e255a193a4f3b808544f0ca 100644
--- a/Resources/Private/Templates/Queue/Index.html
+++ b/Resources/Private/Templates/Queue/Index.html
@@ -28,50 +28,57 @@
 							<tbody>
 								<f:for each="{paginatedMails}" as="mail">
 									{sgm:backend.editOnClick(table: 'tx_sgmail_domain_model_mail', uid: mail.uid) -> sgm:set(name: 'editOnClick') -> f:format.raw()}
-									<tr data-uid="{mail.uid}">
-										<td nowrap="nowrap" class="col-icon">
-											<f:format.raw>
-												<sgm:backend.icon table="tx_sgmail_domain_model_mail" row="{mail}" />
-											</f:format.raw>
-										</td>
-										<td>
-											<span>{mail.from_address}</span>
-											<br>
-											<span>{mail.to_address}</span>
-										</td>
-										<td>
-											<span><f:format.crop maxCharacters="40" append="...">{mail.mail_subject}</f:format.crop></span>
-										</td>
-										<td>
-											<span><f:format.date format="d.m.Y h:i">{mail.crdate}</f:format.date></span>
-											<br>
-											<f:if condition="{mail.last_sending_time} != 0">
-												<span><f:format.date format="d.m.Y h:i">{mail.last_sending_time}</f:format.date></span>
-											</f:if>
-										</td>
-										<td nowrap="nowrap" class="col-control">
-											<f:format.raw>
-												<sgm:backend.control table="tx_sgmail_domain_model_mail" row="{mail}" />
-											</f:format.raw>
-										</td>
-										<td>
-											<f:link.action class="btn btn-default btn-send-now" controller="Queue" action="sendMail" arguments="{uid: mail.uid, selectedTemplate: selectedTemplateKey, selectedExtension: selectedExtensionKey}">
+									<f:if condition="{mail.sent}">
+										<f:then>
+											<tr data-uid="{mail.uid}">
+										</f:then>
+										<f:else>
+											<tr data-uid="{mail.uid}" style="background-color: #C8C8C8;">
+										</f:else>
+									</f:if>
+									<td nowrap="nowrap" class="col-icon">
+										<f:format.raw>
+											<sgm:backend.icon table="tx_sgmail_domain_model_mail" row="{mail}" />
+										</f:format.raw>
+									</td>
+									<td>
+										<span>{mail.from_address}</span>
+										<br>
+										<span>{mail.to_address}</span>
+									</td>
+									<td>
+										<span><f:format.crop maxCharacters="40" append="...">{mail.mail_subject}</f:format.crop></span>
+									</td>
+									<td>
+										<span><f:format.date format="d.m.Y h:i">{mail.crdate}</f:format.date></span>
+										<br>
+										<f:if condition="{mail.last_sending_time} != 0">
+											<span><f:format.date format="d.m.Y h:i">{mail.last_sending_time}</f:format.date></span>
+										</f:if>
+									</td>
+									<td nowrap="nowrap" class="col-control">
+										<f:format.raw>
+											<sgm:backend.control table="tx_sgmail_domain_model_mail" row="{mail}" />
+										</f:format.raw>
+									</td>
+									<td>
+										<f:link.action class="btn btn-default btn-send-now" controller="Queue" action="sendMail" arguments="{uid: mail.uid, selectedTemplate: selectedTemplateKey, selectedExtension: selectedExtensionKey}">
 													<span class="t3js-icon icon icon-size-small icon-state-default actions-document-import-t3d">
 														<span class="icon-markup">
 															<img src="/typo3/sysext/core/Resources/Public/Icons/T3Icons/actions/actions-document-import-t3d.svg" width="16" height="16">
 														</span>
 													</span>
-												<f:translate key="backend.send_now" />
-											</f:link.action>
-											<a class="btn btn-default btn-toggle" data-uid="{mail.uid}">
+											<f:translate key="backend.send_now" />
+										</f:link.action>
+										<a class="btn btn-default btn-toggle" data-uid="{mail.uid}">
 																							<span class="t3js-icon icon icon-size-small icon-state-default actions-document-view">
 																								<span class="icon-markup">
 																									<img src="/typo3/sysext/core/Resources/Public/Icons/T3Icons/actions/actions-document-view.svg" width="16" height="16">
 																								</span>
 																							</span>
-												<f:translate key="backend.showBody" />
-											</a>
-										</td>
+											<f:translate key="backend.showBody" />
+										</a>
+									</td>
 									</tr><!-- Modal -->
 									<div class="modal fade" id="toggle-{mail.uid}" tabindex="-1" role="dialog" aria-labelledby="login-modal-label">
 										<div class="modal-dialog" role="document">