Let’s Encrypt is a free, automated, and open certificate authority (CA), run for the public’s benefit. Let’s Encrypt is a service provided by the Internet Security Research Group (ISRG). 
Read more at About Let’s Encrypt
Storage Made Easy recommends all traffic to be secured with encryption, as a matter of fact, by default we enforce the user of HTTPS communication. That said the software ships with self-signed certificates, to get you started, and when you first connect you will be greeted by an Invalid Certificate message in most browsers as self-signed is fine for pre-production, setup and testing but real certificates need to be added for production. In this post I will show you how to setup a free of charge, trusted certificate with our product.
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