[BUGFIX] Fix scheduler task for multiple email recipients

Classes/Command/SendMailCommandController.php

@@ -63,7 +63,11 @@ class SendMailCommandController extends CommandController {
 		foreach ($mailsToSend as $mailToSend) {
 			/** @var Mail $mailToSend */
 			$fromAddress = $mailToSend->getFromAddress();
-			$toAddress = $mailToSend->getToAddress();
+			$toAddresses = trim($mailToSend->getToAddress());
+			$addressesArray = GeneralUtility::trimExplode(',', $toAddresses, TRUE);
+			if (\count($addressesArray) > 1) {
+				$toAddresses = $addressesArray;
+			}
 			$ccAddresses = GeneralUtility::trimExplode(',', $mailToSend->getCcAddresses(), TRUE);
 			$bccAddresses = GeneralUtility::trimExplode(',', $mailToSend->getBccAddresses(), TRUE);
 			$mailSubject = $mailToSend->getMailSubject();
@@ -72,14 +76,14 @@ class SendMailCommandController extends CommandController {
 			$mailToSend->setSendingTime(time());
 			$mailToSend->setLastSendingTime(time());
 
-			if (empty($fromAddress) || empty($toAddress)) {
+			if (empty($fromAddress) || empty($toAddresses)) {
 				continue;
 			}
 			$this->mailRepository->update($mailToSend);
 
 			$mailMessage = $this->objectManager->get(MailMessage::class);
 			$mailMessage->setFrom($fromAddress, $mailToSend->getFromName());
-			$mailMessage->setTo($toAddress);
+			$mailMessage->setTo($toAddresses);
 			$mailMessage->setSubject($mailSubject);
 			if (count($ccAddresses)) {
 				$mailMessage->setCc($ccAddresses);