diff --git a/htdocs/admin/agenda_other.php b/htdocs/admin/agenda_other.php
index 5ff544a1f6c..18797312ad8 100644
--- a/htdocs/admin/agenda_other.php
+++ b/htdocs/admin/agenda_other.php
@@ -87,7 +87,6 @@ if ($action == 'set') {
 	dolibarr_set_const($db, 'AGENDA_DEFAULT_FILTER_TYPE', $defaultfilter, 'chaine', 0, '', $conf->entity);
 	dolibarr_set_const($db, 'AGENDA_DEFAULT_FILTER_STATUS', GETPOST('AGENDA_DEFAULT_FILTER_STATUS'), 'chaine', 0, '', $conf->entity);
 	dolibarr_set_const($db, 'AGENDA_DEFAULT_VIEW', GETPOST('AGENDA_DEFAULT_VIEW'), 'chaine', 0, '', $conf->entity);
-	dolibarr_set_const($db, "COMM_ACTION_MAIL_DESCRIPTION", GETPOST("COMM_ACTION_MAIL_DESCRIPTION", 'int'), 'chaine', 0, '', $conf->entity);
 
 	$defaultValues = new DefaultValues($db);
 	$result = $defaultValues->fetchAll('', '', 0, 0, array('t.page'=>'comm/action/card.php', 't.param'=>'complete', 't.user_id'=>'0', 't.type'=>'createform', 't.entity'=>$conf->entity));
@@ -399,14 +398,6 @@ print '<td class="right">'."\n";
 $formactions->form_select_status_action('agenda', getDolGlobalString('AGENDA_DEFAULT_FILTER_STATUS'), 1, 'AGENDA_DEFAULT_FILTER_STATUS', 1, 2, 'minwidth100');
 print '</td></tr>'."\n";
 
-//comm action show in description the mail information
-print '<tr class="oddeven">'."\n";
-print '<td>'.$langs->trans("COMM_ACTION_MAIL_DESCRIPTION").'</td>'."\n";
-print '<td class="center">&nbsp;</td>'."\n";
-print '<td class="right">'."\n";
-print $form->selectyesno('COMM_ACTION_MAIL_DESCRIPTION', getDolGlobalString('COMM_ACTION_MAIL_DESCRIPTION'), 1);
-print '</td></tr>';
-
 print '</table>';
 
 print $form->buttonsSaveCancel("Save", '');
diff --git a/htdocs/comm/action/card.php b/htdocs/comm/action/card.php
index b5a62c7480e..69cd535f82f 100644
--- a/htdocs/comm/action/card.php
+++ b/htdocs/comm/action/card.php
@@ -2404,7 +2404,7 @@ if ($id > 0) {
 		}
 
 		//mail information
-		if (!empty($object->email_msgid) && $conf->global->COMM_ACTION_MAIL_DESCRIPTION) {
+		if (!empty($object->email_msgid)) {
 			print '<tr><td>'.$langs->trans('MailTopic').'</td>';
 			print '<td>'.dol_escape_htmltag($object->email_subject).'</td></tr>';
 			print '<tr><td>'.$langs->trans('MailFrom').'</td>';
diff --git a/htdocs/langs/en_US/admin.lang b/htdocs/langs/en_US/admin.lang
index 1a72704a2af..2ef2a996f3b 100644
--- a/htdocs/langs/en_US/admin.lang
+++ b/htdocs/langs/en_US/admin.lang
@@ -313,7 +313,6 @@ MAIN_DISABLE_ALL_SMS=Disable all SMS sending (for test purposes or demos)
 MAIN_SMS_SENDMODE=Method to use to send SMS
 MAIN_MAIL_SMS_FROM=Default sender phone number for SMS sending
 MAIN_MAIL_DEFAULT_FROMTYPE=Default sender email for manual sending (User email or Company email)
-COMM_ACTION_MAIL_DESCRIPTION=Show the email information (sender, receivers, etc) in the event description (if defined)
 UserEmail=User email
 CompanyEmail=Company Email
 FeatureNotAvailableOnLinux=Feature not available on Unix like systems. Test your sendmail program locally.