/// <summary>
/// Main form closing event handler.
/// Disconnect from the current protocol.
///
/// </summary>
/// <param name="sender">The sender object.</param>
/// <param name="e">The event arguments.</param>
private void MainForm_FormClosing(object sender, FormClosingEventArgs e)
{
try
{
Facade facade = Facade.GetInstance();
facade.SaveAllMailMessages();
facade.Disconnect();
}
catch (Exception)
{
}
}