public string GenerateParcel(MailDTO mail)
{
return mail.AttachmentVNum != null ? $"parcel 1 1 {MailList.First(s => s.Value.MailId == (mail.MailId)).Key} {(mail.Title == "NOSMALL" ? 1 : 4)} 0 {mail.Date:yyMMddHHmm} {mail.Title} {mail.AttachmentVNum} {mail.AttachmentAmount} {(byte)ServerManager.GetItem((short)mail.AttachmentVNum).Type}" : string.Empty;
}