public string GeneratePost(MailDTO mail, byte type)
{
return $"post 1 {type} {MailList.First(s => s.Value.MailId == (mail.MailId)).Key} 0 {(mail.IsOpened ? 1 : 0)} {mail.Date:yyMMddHHmm} {DAOFactory.CharacterDAO.LoadById(mail.SenderId).Name} {mail.Title}";
}