请问HN：发送电子邮件是如何让Let's Encrypt花费五位数的？
以下是内容的中文翻译：
https://letsencrypt.org/2025/01/22/ending-expiration-emails/
<p>引用：</p>
<p><i>> 提供到期通知每年让 Let's Encrypt 花费数万美元，我们认为这些钱可以更好地用于我们基础设施的其他方面。</i></p>
<p>我试图想象一个场景，在这个场景中，以一种几乎完全自动化的服务基础设施，每月发送200万封电子邮件的成本会超过每月一千美元。但我找不到这样的例子。</p>
<p>我的计算：SES 的定价大约是每千封电子邮件0.1美元。Let's Encrypt 目前大约有5.5亿个有效证书。假设有5%的人收到到期通知（我从未收到过？），那么平均每月大约就是200万封电子邮件。</p>
<p>这怎么可能呢？我是不是漏掉了什么？</p>
查看原文
https://letsencrypt.org/2025/01/22/ending-expiration-emails/<p>Quote:<p><i>> Providing expiration notifications costs Let’s Encrypt tens of thousands of dollars per year, money that we believe can be better spent on other aspects of our infrastructure.</i><p>I'm trying to come up with a scenario in my head where sending, let's say, 2M emails per month at scale with an essentially fully automated service infrastructure can cost more than a grand per month. I'm failing to do so.<p>My calc: SES pricing is around $0.1 per 1,000 emails. LE has around 550M active certificates. Let's say 5% receive an expiration notice (I never got one?), that's just over 2M emails per month on average.<p>How can that be? Am I missing something?