Latest server now supports automatic certificate retrieval and renewal.
All you need is :
server.propertiesfile. For example
myhost.com, IP is not supported, this is the limitation of Let’s Encrypt;
mail.properties. For example
- Blynk server running on port 80 (you may use port forwarding rule as by default Blynk uses 8080 port for HTTP);
I made small demo below: