I unsubscribed from the Let's encrypt Expiry emails by accidentally clicking the link in the bottom of the email. We have a lot of domains on a lot of servers using Let's encrypt. I saw in an older post that you guys were able to remove an emailadres from the blacklist of receiving the expiry mails. Could that please be done for the mail office[at]ammann[dot]info as well?
Unfortunately not because this doesn't bring back notifications for already registered domains. Also we have our own mail server, so the problem is not to create an alias.
So why then this notifications are existing, if one should not rely on them.
It looks like I also should not rely on the information, that the notifications for other domains are not working anymore if I click the unsubscribe link, because this happened to me some months ago, and we still get notifications for other domains.
I just wasn't sure if someone from letsecrypt helped me to resubscribe or not.
Expiry emails are send to the email stored in the account information. If you update the email address for an account, you'll also get expiry emails for the certificates issued in the past by that account. Not only for future certs.