diff --git a/mail/inc/class.mail_ui.inc.php b/mail/inc/class.mail_ui.inc.php
index c5eefac7f8..275ba394b9 100644
--- a/mail/inc/class.mail_ui.inc.php
+++ b/mail/inc/class.mail_ui.inc.php
@@ -2052,7 +2052,7 @@ $filter['before']= date("d-M-Y", $cutoffdate2);
 
 			$imageHTMLBlock = '';
 			//error_log(__METHOD__.__LINE__.array2string($header));
-			if (in_array("attachments", $cols))
+			if (in_array('attachments', $cols))
 			{
 				if (!empty($header['attachments']) && (in_array($header['mimetype'], array(
 						'multipart/mixed', 'multipart/signed', 'multipart/related', 'multipart/report',
@@ -2085,11 +2085,11 @@ $filter['before']= date("d-M-Y", $cutoffdate2);
 				// show priority flag
 				if ($header['priority'] < 3)
 				{
-					 $image = Api\Html::image('mail','prio_high');
+					 $image = Api\Html::image('mail','prio_high', lang('High priority'));
 				}
 				elseif ($header['priority'] > 3)
 				{
-					$image = Api\Html::image('mail','prio_low');
+					$image = Api\Html::image('mail','prio_low', lang('Low priority'));
 				}
 				else
 				{
@@ -2099,9 +2099,9 @@ $filter['before']= date("d-M-Y", $cutoffdate2);
 				$imageflagged ='';
 				if ($header['flagged'])
 				{
-					$imageflagged = Api\Html::image('mail','unread_flagged_small');
+					$imageflagged = Api\Html::image('mail','unread_flagged_small', lang('Unread'));
 				}
-				$data["attachments"] = $image.$attachmentFlag.$imageflagged; // icon for attachments available
+				$data['attachments'] = $image.$attachmentFlag.$imageflagged; // icon for attachments available
 			}
 
 			// sent or draft or template folder -> to address
diff --git a/mail/lang/egw_de.lang b/mail/lang/egw_de.lang
index c1e087728b..56d68f7795 100644
--- a/mail/lang/egw_de.lang
+++ b/mail/lang/egw_de.lang
@@ -277,6 +277,7 @@ handling of external http images / mixed content in mails	mail	de	Behandlung von
 header	mail	de	Kopfzeilen
 header lines	mail	de	Kopfzeilen anzeigen
 high	mail	de	hoch
+high priority	mail	de	Hohe Priorität
 hold %1 to drag files to your computer	mail	de	%1 halten um Dateien auf Ihren Computer zu ziehen
 home page folders	mail	de	Darstellung von E-Mails auf der Startseite
 hostname or ip	mail	de	Hostname oder IP
@@ -333,6 +334,7 @@ learning as spam failed because of %1	mail	de	Als Spam lernen fehlgeschlagen, da
 less than	mail	de	kleiner als
 limit mailing list results when searching for addresses	mail	de	Limitierung der Ergebnisse von Gruppen und Verteilerlisten bei der Suche nach Adressen
 list of actions to be switched/activated on by default (eg. mail compose save as infolog action)	mail	de	Liste der Aktionen, die standardmäßig eingeschaltet bzw. aktiviert werden sollen (z.B. E-Mail verfassen und als InfoLog speichern).
+low priority	mail	de	Niedrige Priorität
 mail	common	de	E-Mail
 mail acl	mail	de	Zugriffsrechte
 mail filter	mail	de	Filter
diff --git a/mail/lang/egw_en.lang b/mail/lang/egw_en.lang
index 9b06fb3508..da4dbe399b 100644
--- a/mail/lang/egw_en.lang
+++ b/mail/lang/egw_en.lang
@@ -277,6 +277,7 @@ handling of external http images / mixed content in mails	mail	en	Handling of ex
 header	mail	en	Header
 header lines	mail	en	Header lines
 high	mail	en	High
+high priority	mail	en	High priority
 hold %1 to drag files to your computer	mail	en	Hold %1 to drag files to your computer
 home page folders	mail	en	home page folders
 hostname or ip	mail	en	Hostname or IP
@@ -333,6 +334,7 @@ learning as spam failed because of %1	mail	en	Learning as spam failed because of
 less than	mail	en	less than
 limit mailing list results when searching for addresses	mail	en	Limit mailing list results when searching for addresses
 list of actions to be switched/activated on by default (eg. mail compose save as infolog action)	mail	en	List of actions to be switched/activated on by default (eg. email compose "Save as InfoLog" action).
+low priority	mail	en	Low priority
 mail	common	en	Mail
 mail acl	mail	en	Email access rights
 mail filter	mail	en	Filter
diff --git a/mail/templates/default/preview.css b/mail/templates/default/preview.css
index 9c41046b64..8736ab5971 100644
--- a/mail/templates/default/preview.css
+++ b/mail/templates/default/preview.css
@@ -104,7 +104,7 @@ blockquote blockquote blockquote blockquote blockquote blockquote{
 
 .mail_externalImagesMsg button.closeBtn {
 	float: right;
-    background-image: url(../api/templates/default/images/close.svg);
+    background-image: url(../node_modules/bootstrap-icons/icons/x-lg.svg);
     height: 30px;
     width: 50px;
     background-repeat: no-repeat;