Meli is built on top of Caddy. Hence, it natively supports automatic SSL certificate issuance and renewal. By default, it uses LetsEncrypt, but Meli can obtain SSL certificates from a certification authority (CA) using the ACME protocol.
Let's Ecnrypt production rate limits leave small room for error. Hence, we recommend using their staging environment to start off. All you need to do is to set:
If you want to use a custom another CA: