private void UpdateView()
{
if (_mail is null)
{
Hide();
return;
}
var isNew = _mail.New;
button.gameObject.SetActive(isNew);
unseal.SetActive(!isNew);
iconImage.overrideSprite = SpriteHelper.GetMailIcon(_mail.MailType);
content.text = _mail.ToInfo();
content.color = isNew
? ColorHelper.HexToColorRGB("fff9dd")
: ColorHelper.HexToColorRGB("7a7a7a");
}