e-mail conversion
电子邮件转换
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The investigation confirmed only 28 “sales” on 350m e-mail messages sent, a conversion rate under .00001%.
研究表明在送出的三亿五千万封邮件中只有28封“卖出去了”，这样其成功率还不到0.00001%。
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E-mail marketing, by comparison, has an 11% click-through rate and a 4% average conversion rate.
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