Let&#x27;s Encrypt is essentially shareware. The basic features are available for free, but if you want something better than that, such as wildcard certificates, you must pay up. Not to mention that it&#x27;s cross-signed with IdenTrust, a commercial CA, and since <i>everyone</i> on the web <i>has</i> to use this service to get HTTPS (there aren&#x27;t other decent alternatives), this is a good way for IdenTrust to boost its numbers and be able to claim it&#x27;s &quot;the biggest CA in the world&quot; or something. There&#x27;s no way to choose a different CA with Let&#x27;s Encrypt.