diff --git a/frappe/public/js/frappe/list/list_view.js b/frappe/public/js/frappe/list/list_view.js
index 5e95521c04..f6611287a7 100644
--- a/frappe/public/js/frappe/list/list_view.js
+++ b/frappe/public/js/frappe/list/list_view.js
@@ -784,6 +784,12 @@ frappe.views.ListView = class ListView extends frappe.views.BaseList {
 		return '#Form/' + this.doctype + '/' + docname;
 	}
 
+	get_seen_class(doc) {
+		return JSON.parse(doc._seen || '[]').includes(frappe.session.user)
+			? ''
+			: 'bold';
+	}
+
 	get_subject_html(doc) {
 		let user = frappe.session.user;
 		let subject_field = this.columns[0].df;
@@ -795,10 +801,7 @@ frappe.views.ListView = class ListView extends frappe.views.BaseList {
 		let heart_class = liked_by.includes(user) ?
 			'liked-by' : 'text-extra-muted not-liked';
 
-		const seen = this.get_seen
-			? this.get_seen(doc)
-			: JSON.parse(doc._seen || '[]')
-				.includes(user) ? '' : 'bold';
+		const seen = this.get_seen_class(doc);
 
 		let subject_html = `
 			<input class="level-item list-row-checkbox hidden-xs" type="checkbox" data-name="${escape(doc.name)}">
diff --git a/frappe/public/js/frappe/views/inbox/inbox_view.js b/frappe/public/js/frappe/views/inbox/inbox_view.js
index 5bde09b4f9..1085e93e6c 100644
--- a/frappe/public/js/frappe/views/inbox/inbox_view.js
+++ b/frappe/public/js/frappe/views/inbox/inbox_view.js
@@ -48,7 +48,6 @@ frappe.views.InboxView = class InboxView extends frappe.views.ListView {
 		this.email_account = frappe.get_route()[3];
 		this.page_title = this.email_account;
 		this.filters = this.get_inbox_filters();
-		this.get_seen = (doc) => this.set_seen(doc);
 	}
 
 	setup_columns() {
@@ -70,7 +69,7 @@ frappe.views.InboxView = class InboxView extends frappe.views.ListView {
 		});
 	}
 
-	set_seen(doc) {
+	get_seen_class(doc) {
 		const seen =
 			Boolean(doc.seen) || JSON.parse(doc._seen || '[]').includes(frappe.session.user)
 				? ''