This is my method in Meteor when a user tries to pay the invoice. I want to be able to set up a custom email receipt but I don't know where to start.

methods.js

Meteor.methods({
  payInvoice: function (token, transfer) {
    // TODO: add checks

    console.log('=== Pay Invoive ===');
    console.log(token);
    console.log(JSON.stringify(transfer, null, 2));
    console.log('===================');

    var Stripe = StripeAPI(transfer.invoice.stripe.accessToken);

    var charge = Stripe.charges.create({
      amount: transfer.invoice.grandTotal * 100,
      currency: "usd",
      card: token.id,
      // XXX: Update application fee rate
      application_fee: transfer.invoice.total * 2 + 20,
      receipt_email: transfer.recipientEmail,
      description: 'Payment to ' + transfer.senderEmail
    }, transfer.invoice.stripe.accessToken, Meteor.bindEnvironment(function(err, charge) {
      if (err && err.type === 'StripeCardError') {
        // The card has been declined

        console.log('The card has been declined');
      }

      if (err) {
        console.log(err);
      }

      console.log(charge);

      Transfers.update(transfer._id, {$set: {"invoice.stripe.chargeToken": charge}});
      return transfer._id;
    }));
  },
  //etc
});