old_contents: var nodemailer = require('nodemailer');
  var sgTransport = require('nodemailer-sendgrid-transport');
  
  exports.mail = function (request,response) {
      // api key https://sendgrid.com/docs/Classroom/Send/api_keys.html
      var options = {
          auth: {
              api_key: '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'
          }
      }
      console.log(request.body);
      if (!request.body || !request.body.name || !request.body.email || !request.body.subject || !request.body.message) {
          return response.status(400).json({success:false, error:true, message:"All fields are required!"});
      }
      var mailer = nodemailer.createTransport(sgTransport(options));
      var email = {
          to: ['vikash@programminggeek.in'],
          bcc: ['vermavikash014@gmail.com'],
          from: request.body.name + "<" + request.body.email + ">",
          subject: request.body.subject,
          text: request.body.message
      };
      mailer.sendMail(email, function (err, res) {
          if (err) {
              console.log(err);
              return response.json({ success: false, error: true, message: "Couldn't send email!" })
          }
          response.json({ success: true, error: false, message: "Your message has been successfully sent!" })
      });
  }
  
new_contents: var nodemailer = require('nodemailer');
  var sgTransport = require('nodemailer-sendgrid-transport');
  
  exports.mail = function (request,response) {
      // api key https://sendgrid.com/docs/Classroom/Send/api_keys.html
      var options = {
          auth: {
              api_key: '<API_KEY>'
          }
      }
      console.log(request.body);
      if (!request.body || !request.body.name || !request.body.email || !request.body.subject || !request.body.message) {
          return response.status(400).json({success:false, error:true, message:"All fields are required!"});
      }
      var mailer = nodemailer.createTransport(sgTransport(options));
      var email = {
          to: ['vikash@programminggeek.in'],
          bcc: ['vermavikash014@gmail.com'],
          from: request.body.name + "<" + request.body.email + ">",
          subject: request.body.subject,
          text: request.body.message
      };
      mailer.sendMail(email, function (err, res) {
          if (err) {
              console.log(err);
              return response.json({ success: false, error: true, message: "Couldn't send email!" })
          }
          response.json({ success: true, error: false, message: "Your message has been successfully sent!" })
      });
  }
  
subject: Remove API KEY