All Smarthost.eu hosting accounts have default SSL certifiacte. Customer just need to add a domain through Additional Domains in cPanel, and a free certificate will be generated within 30 minutes.
By dispelling doubts and frequently appearing questions:
-you do not need to have a separate IP for an SSL certificate (you can have several domains on one account and each can have its own SSL certificate)
-certificates are completely free, installed and extended completely automatically. CPanel certificates are detected by all web browsers
-Optionally, you can easily install the Let's Encrypt certificate, but this is not necessary due to the standard cPanel installation.