如何在MailKit中查看发送/接收数据量？

var logger = new ProtocolLogger();
var options = new ImapClientOptions
{
    ProtocolLogger = logger
};

using (var client = new ImapClient(options))
{
    // 进行 IMAP 操作
}

// 获取发送/接收数据量
var sentBytes = logger.BytesSent;
var receivedBytes = logger.BytesReceived;

var logger = new ProtocolLogger();
var options = new SmtpClientOptions
{
    ProtocolLogger = logger
};

using (var client = new SmtpClient(options))
{
    // 进行 SMTP 操作
}

// 获取发送/接收数据量
var sentBytes = logger.BytesSent;
var receivedBytes = logger.BytesReceived;