The two most important metrics for email marketing are open rate and click-through rate. If your emails aren't opened, subscribers will never see your full marketing message, and if they open them but don't click through to your site, your emails won't convert.
Nature, Published online: 25 February 2026; doi:10.1038/d41586-026-00569-x，这一点在夫子中也有详细论述
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腾讯元宝使用指南 图源：元宝官方
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