Add "-i" to sendmail's pipe

Signed-off-by: FedericoHeichou <federicoheichou@gmail.com>

apps/settings/templates/settings/admin/additional-mail.php

@@ -45,7 +45,7 @@ if ($_['mail_smtpmode'] === 'qmail') {
 
 $mail_sendmailmode = [
 	'smtp' => 'smtp (-bs)',
-	'pipe' => 'pipe (-t)'
+	'pipe' => 'pipe (-t -i)'
 ];
 
 ?>

lib/private/Mail/Mailer.php

@@ -331,7 +331,7 @@ class Mailer implements IMailer {
 		}
 
 		$binaryParam = match ($this->config->getSystemValueString('mail_sendmailmode', 'smtp')) {
-			'pipe' => ' -t',
+			'pipe' => ' -t -i',
 			default => ' -bs',
 		};