Fixed subject line and css

cmd/subscribers.go

@@ -895,8 +895,21 @@ func makeOptinNotifyHook(unsubHeader bool, u *UrlConfig, q *models.Queries, i *i
 			hdr.Set("List-Unsubscribe", `<`+unsubURL+`>`)
 		}
 
+		// Build the subject with public list names. Private list names are
+		// not leaked in the subject, mirroring the e-mail body.
+		var pubNames []string
+		for _, l := range out.Lists {
+			if l.Type == models.ListTypePublic {
+				pubNames = append(pubNames, l.Name)
+			}
+		}
+		subject := i.T("subscribers.optinSubject")
+		if len(pubNames) > 0 {
+			subject = i.Ts("subscribers.optinSubjectList", "name", strings.Join(pubNames, ", "))
+		}
+
 		// Send the e-mail.
-		if err := notifs.Notify([]string{sub.Email}, i.T("subscribers.optinSubject"), notifs.TplSubscriberOptin, out, hdr); err != nil {
+		if err := notifs.Notify([]string{sub.Email}, subject, notifs.TplSubscriberOptin, out, hdr); err != nil {
 			lo.Printf("error sending opt-in e-mail for subscriber %d (%s): %s", sub.ID, sub.UUID, err)
 			return 0, err
 		}