Send emails with Java

import com.emailr.*;

public class Main {
    public static void main(String[] args) {
        Emailr emailr = new Emailr("em_xxxxxxxxx");

        CreateEmailOptions params = CreateEmailOptions.builder()
                .from("Acme <onboarding@emailr.dev>")
                .to("delivered@emailr.dev")
                .subject("it works!")
                .html("<strong>hello world</strong>")
                .build();

         try {
            CreateEmailResponse data = emailr.emails().send(params);
            System.out.println(data.getId());
        } catch (EmailrException e) {
            e.printStackTrace();
        }
    }
}