[greatgib]

As they have the account email, they could also notify of the issue by email when there are too many issues renewing for too long.

[Macha]

Note that Lets Encrypt are winding down their email notifications as of today, actually:

https://letsencrypt.org/2025/01/22/ending-expiration-emails/

[c0wb0yc0d3r]

*Expiration emails only.

[Macha]

Which is the only email they send to individual account holders.

The only email they're keeping are mailing lists which you need to subscribe to seperately which are presumably run by an external provider.

[xp84]

Sure, and they must have already emailed the person when they failed to get a new cert before their last one expired. But I suspect a lot of people don't use a real email address for LE, since there's no enforcement/verification. Or they might be using one that isn't their main one.

[TonyTrapp]

A Let's Encrypt account is not required to be associated with an email address.