diff --git a/htdocs/eventorganization/conferenceorbooth_list.php b/htdocs/eventorganization/conferenceorbooth_list.php
index 9b997c8b0e9..4d5e6eb2794 100644
--- a/htdocs/eventorganization/conferenceorbooth_list.php
+++ b/htdocs/eventorganization/conferenceorbooth_list.php
@@ -628,7 +628,7 @@ $arrayofmassactions = array(
 if ($permissiontodelete) {
 	$arrayofmassactions['predelete'] = img_picto('', 'delete', 'class="pictofixedwidth"').$langs->trans("Delete");
 }
-if (GETPOST('nomassaction', 'int') || in_array($massaction, array('presend', 'presend_attendees', 'predelete'))) {
+if (GETPOST('nomassaction', 'int') || in_array($massaction, array('presend', 'predelete'))) {
 	$arrayofmassactions = array();
 }
 $massactionbutton = $form->selectMassAction('', $arrayofmassactions);
diff --git a/htdocs/eventorganization/conferenceorboothattendee_list.php b/htdocs/eventorganization/conferenceorboothattendee_list.php
index a9422f8ddd7..de09a9dade8 100644
--- a/htdocs/eventorganization/conferenceorboothattendee_list.php
+++ b/htdocs/eventorganization/conferenceorboothattendee_list.php
@@ -181,7 +181,9 @@ if (GETPOST('cancel', 'alpha')) {
 	$action = 'list';
 	$massaction = '';
 }
-if (!GETPOST('confirmmassaction', 'alpha') && $massaction != 'presend' && $massaction != 'confirm_presend') {
+if (!GETPOST('confirmmassaction', 'alpha') && $massaction != 'presend' && $massaction != 'confirm_presend'
+&& $massaction != 'presend_attendees'
+&& $massaction != 'confirm_presend_attendees') {
 	$massaction = '';
 }
 
@@ -216,6 +218,7 @@ if (empty($reshook)) {
 	$objectclass = 'ConferenceOrBoothAttendee';
 	$objectlabel = 'ConferenceOrBoothAttendee';
 	$uploaddir = $conf->eventorganization->dir_output;
+	include DOL_DOCUMENT_ROOT.'/eventorganization/core/actions_massactions_mail.inc.php';
 	include DOL_DOCUMENT_ROOT.'/core/actions_massactions.inc.php';
 }
 
@@ -676,6 +679,7 @@ $arrayofmassactions = array(
 	//'generate_doc'=>img_picto('', 'pdf', 'class="pictofixedwidth"').$langs->trans("ReGeneratePDF"),
 	//'builddoc'=>img_picto('', 'pdf', 'class="pictofixedwidth"').$langs->trans("PDFMerge"),
 	//'presend'=>img_picto('', 'email', 'class="pictofixedwidth"').$langs->trans("SendByMail"),
+	'presend_attendees'=>img_picto('', 'email', 'class="pictofixedwidth"').$langs->trans("SendByMail").' - '.$langs->trans("Attendees"),
 );
 if ($permissiontodelete) {
 	$arrayofmassactions['predelete'] = img_picto('', 'delete', 'class="pictofixedwidth"').$langs->trans("Delete");
@@ -709,6 +713,7 @@ $topicmail = "SendConferenceOrBoothAttendeeRef";
 $modelmail = "conferenceorboothattendee";
 $objecttmp = new ConferenceOrBoothAttendee($db);
 $trackid = 'xxxx'.$object->id;
+include DOL_DOCUMENT_ROOT.'/eventorganization/tpl/massactions_mail_pre.tpl.php';
 include DOL_DOCUMENT_ROOT.'/core/tpl/massactions_pre.tpl.php';
 
 if ($search_all) {
diff --git a/htdocs/eventorganization/core/actions_massactions_mail.inc.php b/htdocs/eventorganization/core/actions_massactions_mail.inc.php
index 2f8e2959f2b..5fcada893f9 100644
--- a/htdocs/eventorganization/core/actions_massactions_mail.inc.php
+++ b/htdocs/eventorganization/core/actions_massactions_mail.inc.php
@@ -90,7 +90,7 @@ if (!$error && $massaction == 'confirm_presend_attendees') {
 		foreach ($toselect as $toselectid) {
 			$result = $objecttmp->fetch($toselectid);
 			if ($result > 0) {
-				$attendees = $attendee->fetchAll('', '', 0, 0, array('t.fk_actioncomm' => $objecttmp->id));
+				$attendees = $attendee->fetchAll();
 				if (is_array($attendees) && count($attendees) > 0) {
 					foreach ($attendees as $attmail) {
 						if (!empty($attmail->email)) {
@@ -119,7 +119,7 @@ if (!$error && $massaction == 'confirm_presend_attendees') {
 			$receiver = array($receiver);
 		}
 	}
-	if (!trim($_POST['sendto']) && count($receiver) == 0 && count($listofselectedid) == 1) {    // if only one recipient, receiver is mandatory
+	if (!trim($_POST['sendto']) && count($receiver) == 0 && count($listofselectedid) == 0) {    // if only one recipient, receiver is mandatory
 		$error++;
 		setEventMessages($langs->trans("ErrorFieldRequired", $langs->transnoentitiesnoconv("Recipient")), null, 'warnings');
 		$massaction = 'presend_attendees';
diff --git a/htdocs/eventorganization/tpl/massactions_mail_pre.tpl.php b/htdocs/eventorganization/tpl/massactions_mail_pre.tpl.php
index e4990da6424..8d0836b080e 100644
--- a/htdocs/eventorganization/tpl/massactions_mail_pre.tpl.php
+++ b/htdocs/eventorganization/tpl/massactions_mail_pre.tpl.php
@@ -37,7 +37,7 @@ if ($massaction == 'presend_attendees') {
 		foreach ($arrayofselected as $toselectid) {
 			$result = $objecttmp->fetch($toselectid);
 			if ($result > 0) {
-				$attendees = $attendee->fetchAll('', '', 0, 0, array('t.fk_actioncomm'=>$objecttmp->id));
+				$attendees = $attendee->fetchAll();
 				if (is_array($attendees) && count($attendees)>0) {
 					foreach ($attendees as $attmail) {
 						if (!empty($attmail->email)) {