private void buttonEditFolders_Click(object sender, EventArgs e)
{
hMailServer.Settings settings = APICreator.Application.Settings;
hMailServer.IMAPFolders publicFolders = settings.PublicFolders;
formAccountFolders accountFoldersDlg = new formAccountFolders(publicFolders, true);
accountFoldersDlg.ShowDialog();
Marshal.ReleaseComObject(settings);
Marshal.ReleaseComObject(publicFolders);
}