private void btnLogin_Click(object sender, EventArgs e)
        {
            GetMails client = new GetMails();

            client.Authenticate(txtUsername.Text, txtPassword.Text);
            ReadEmailForm letsSeeMyEmails = new ReadEmailForm(client);

            letsSeeMyEmails.Show();
            Hide();
        }
 public ReadEmailForm(GetMails client)
 {
     InitializeComponent();
     this.client = client;
 }