Magic Pages provides a free SSL certificate for every custom domain set up. In my eyes, an SSL certificate is crucial nowadays. The underlying technology makes sure that the data transferred between your website and your visitors is encrypted.
To make this possible, we use Let's Encrypt, a free and automated provider of SSL certificates. It is known for its reliability and widely used. Ghost's official hosting solution, Ghost(Pro), also uses them, for example.
SSL certificates need to be renewed regularly. Magic Pages takes care of that for you. No manual intervention is required. When the backend systems detect that the certificate is running out, it automatically provisions a new one for you.