1、首先，登陆http://isnoop.net/gmail/
2、在"Request invite"按钮前空白处输入一个有效的邮箱地址，并填写验证码
3、然后按下按钮即可在写入的邮箱中收到Gmail邀请链接
4、成功后回提示:
Thank you for using this service! Your invite has been sent to the email specified.
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注意：可能验证码的问题，有时候多提交几次才能成功。