try
{
    // Intialize the platform with the mail server information, where m_secureStringPassword contains the password
    m_platformInstance = new MailAttachmentDownloaderPlatform("imap.gmail.com", (ushort)993, "gear@gmail.com", m_secureStringPassword, true, true, true);

    // Get the processmail interface instance and store in local member data.
    m_procMail = m_platformInstance.GetProcessMail();

    // Register event handler
    m_procMail.StatusUpdateInstance += new StatusUpdate(this.StatusUpdate);

    ......

    // Get the search settings.
    IMailSearchSettings searchSettings = (IMailSearchSettings)m_procMail.GetSearchSettings();

    // Download documents
    searchSettings.DownloadFilesOfType = DownloadFileType.Documents;

    // Save files in the current directory.
    searchSettings.SaveAttachmentsInDirectory = Directory.GetCurrentDirectory();

    // Set the max connections to 1.
    searchSettings.MaxConnections = 1;

    // Download the attachments based on search settings set above.
    m_procMail.StartDownloadingAttachments();
}
catch (Exception e)
{
    Console.WriteLine(e.Message);
}

// As events arrive, write them out in the command line.
public void StatusUpdate(IProcessMailEvent imapEvent)
{
    switch (imapEvent.EventType)
    {
        case ProcessMailEventType.MailProcessSearchResults:
            IProcessSearchResultEvent processEvent = (IProcessSearchResultEvent)imapEvent;
            Console.WriteLine("Processing message " + processEvent.MessageNumberBeingProcessed + " of " + processEvent.TotalNumberOfMessages + "....");
            break;
        case ProcessMailEventType.MailDownloadComplete:
            Console.WriteLine(imapEvent.StatusString + ", file=" + Path.GetFileName(imapEvent.FilenameOrFoldername));
            break;
        default:
            Console.WriteLine(imapEvent.StatusString);
        break;
    }
}