Supervisor for Nylas

sync-engine-api-proxy.conf

# Nginx config for proxying requests on port 80 to 5555, put in /etc/nginx/conf.d/
server {
    listen 80;
    listen 443 default_server ssl;
    server_name example.com; # You should change this to the IP address or domain for your server
    location / {
        proxy_set_header   X-Real-IP $remote_addr;
        proxy_set_header   Host      $http_host;
        proxy_pass         http://127.0.0.1:5555;
    }
}

sync-engine-api.conf

[program:api]
command=/usr/local/bin/inbox-api
redirect_stderr=true
stdout_logfile=/var/log/sync-engine-api/access.log
stderr_logfile=/var/log/sync-engine-api/error.log
user=ubuntu
autostart=true
autorestart=true
stopsignal=QUIT

sync-engine.conf

[program:inbox]
command=/usr/local/bin/inbox-start
redirect_stderr=true
stdout_logfile=/var/log/sync-engine/access.log
stderr_logfile=/var/log/sync-engine/error.log
user=ubuntu
autostart=true
autorestart=true
stopsignal=QUIT

If you're using Supervisor to keep the bin/inbox-start and bin/inbox-api processes running, these are example configs.

Don't forget to manually create the /var/log/sync-engine(-api)/ directories.