Add more details to the Let's Encrypt warning e-mail
The current e-mail only states WARNING - Let's Encrypt SSL Cert for: domain.tld could not be issued.
Please add more detailed information why the certificate could not be issued as we can find in the cron.log.
You can find the details in the letsencrypt log file.
I know but if users make a simple error it would be nice to be able to just forward the e-mail with the warning and problem to them.