this post was submitted on 30 Jan 2025
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I think it's a good idea, everyone should be automating this anyway.

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As with all things email, they probably really wanted to make sure that the mails were delivered and thus were using a commercial MTA to ensure that.

I'd wager, even at 20 or 30 or 40k a year, that's way less than it'd cost to host infra and have at least two if not three engineers available 24/7 to maintain critical infra.

Looking at my mail, over the years I've gotten a couple hundred email from them around certificates and expirations (and other things), and if you assume there's a couple million sites using these certs, I could easily see how you'd end up in a situation where this could scale in cost very very slowly, until it's suddenly a major drain.