我收到的大多数电子邮件都是垃圾邮件。

Most of the emails I receive are ___spam.

请将此消息标记为垃圾邮件以过滤掉。

Please mark this message as ___spam to filter it out.

现代电子邮件服务有有效的垃圾邮件过滤器。

Modern email services have effective ___spam filters.