Each of the plugins was moved to Loopback models.

Email and Coinbase models use the same code that was originally developed.

Note: By default loopback has implementation of POST to /modelpath. To override it the following construct is required

module.exports = function (MailSender) {.   // standard declaration
    MailSender.on('dataSourceAttached', function (obj) { // hook to wait for datasource connection (Memory connector)
        MailSender.create = function (mail, params, cb) { // override of POST /modelname 
             // actual code 
                 // cb(null, results)  to return results 
                 // cb(err) to return error

to test Mail model use

curl -X POST \
  http://[...]/send-email \
  -H 'Cache-Control: no-cache' \
  -H 'Content-Type: application/json' \
  -d '{
    "cost": "1",
    "cpms": ["34"],
    "to":"custom@mail.com",
    "cpmMobile": "45",
    "days": "5",
    "desktopUrl": "http://dc.com",
    "mobileUrl": "http://mc.pm"
}'

the fbUser model once connected to database (MSSQL or MySQL or any other db) will return and save objects. No custom code or SQL query is required. Handled by loopback connector

This project is already imported into LB and exposed via Gateway, Al will show that on demo.