Node Red Stock market warning, send a email when a stock value goes bellow a configured value

gistfile1.txt

[{"id":"b459b352.e35c5","type":"inject","z":"fdb65e1e.45f03","name":"","topic":"","payload":"","payloadType":"date","repeat":"7200","crontab":"","once":false,"onceDelay":"","x":175,"y":76,"wires":[["b38a40f7.6890f"]]},{"id":"31944a31.4db1e6","type":"http request","z":"fdb65e1e.45f03","name":"Get current price from iextrading.com","method":"GET","ret":"txt","url":"https://ws-api.iextrading.com/1.0/stock/{{{stock_item}}}/price","tls":"","x":480.18182373046875,"y":118,"wires":[["fc60b702.6ddaf8"]]},{"id":"b296ce5e.4edd8","type":"debug","z":"fdb65e1e.45f03","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"true","x":997,"y":78,"wires":[]},{"id":"fc60b702.6ddaf8","type":"function","z":"fdb65e1e.45f03","name":"Compare Stock  Value","func":"// This function compares the payload with warn_level\nmsg.warn_level = msg.warn_level || 0.0;\n\nvar mailTopic = \"[WARN] \"+msg.stock_item+\" Stock value\";\nvar mailFrom = \"[email protected]\";\n\nfunction addZero(i) {\n    if (i < 10) {\n        i = \"0\" + i;\n    }\n    return i;\n}\n\nfunction timeConverter(UNIX_timestamp){\n  var a = new Date(UNIX_timestamp );\n  var year = a.getFullYear();\n  var month = addZero(a.getMonth());\n  var date = addZero(a.getDate());\n  var hour = addZero(a.getHours()); \n  var min =  addZero(a.getMinutes());\n  var sec =  addZero(a.getSeconds());\n  var time = date + '/' + month + '/' + year + ' ' + hour + ':' + min + ':' + sec ;\n  return time;\n}\n\n\nif (msg.payload <= msg.warn_level){\n    var rstring = \"Warning: The Stock value of: \"+msg.stock_item+\"\\n\"+\n    \"is now bellow: \"+msg.warn_level+\"\\n\"+\n    \"current value: \"+ msg.payload+\"\\n\"+\n    \"Date:\"+timeConverter(msg.check_date);\n    return {payload:rstring,topic:mailTopic,from:mailFrom,date:msg.check_date}\n}else{\n    return false;\n}\n","outputs":1,"noerr":0,"x":767,"y":117,"wires":[["b296ce5e.4edd8","ecae85f2.e05768"]]},{"id":"b38a40f7.6890f","type":"change","z":"fdb65e1e.45f03","name":"Configure Stock data","rules":[{"t":"set","p":"stock_item","pt":"msg","to":"ADBE","tot":"str"},{"t":"set","p":"warn_level","pt":"msg","to":"210","tot":"str"},{"t":"set","p":"check_date","pt":"msg","to":"","tot":"date"}],"action":"","property":"","from":"","to":"","reg":false,"x":201,"y":120,"wires":[["31944a31.4db1e6"]]},{"id":"ecae85f2.e05768","type":"e-mail","z":"fdb65e1e.45f03","server":"","port":"587","secure":false,"name":"","dname":"Mail ","x":1007,"y":167,"wires":[]}]