请教下各位高手，麻烦给看下这几个问题该怎么回答
最近申请某联盟的时候，联盟经理发信问了这几个问题，自己不会解答，麻烦高手能给下建议！中文的也可以，非常感谢！How do you attain your email data? Please be specific
How large are youremail list?
Is your data double of single Opt - in?
What is the primary demographic of your data?
麻烦大家了，谢谢！
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