用阿里的邮件服务或者 SendCloud 来发送广告信息会被封吗， 这种服务发送的邮件很少进垃圾箱吧？
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StederLee Nov 12, 2018  1
阿里云的邮件推送有信用分的机制，可以看看这个：
https://help.aliyun.com/document_detail/29418.html |
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