E-mail营销与垃圾邮件本质区别是（ ）。
- A.是否实现获得用户许可
- B.邮件是否有用
- C.邮件是否有病毒
- D.邮件是否合法
正确答案及解析
正确答案
解析
E-mail营销与垃圾邮件本质区别是是否实现获得用户许可。
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