Providing email services to your customers or even your own company is an import part of communication. Also, it is important to brand your service and this way also adds some additional trust for your users. Roundcube Support pleases admins to customize their installation, so the people don’t contact Roundcube project for support.
Select the right skin Selecting the right skin for your users is a hard task. Even if the webmail services you provide, are only for one company.
Certificates today are like DNS - they must work, because most of the systems expect them to be there and they must be valid. Especially Google changed for many services to contact with SSL/TLS enabled by default.
Renewing outdated certificates Sometimes problems arise and you need to check whether certbot (of Let’s Encrypt) or cron is still working. Maybe you simply want to check, whether your certificates are all renewed, you can simply run: