Name this file server/email.js and then also add that to your .gitignore

email.js

// put me at server/email.js

Meteor.startup(function () {
    var user = "user";
    var password = "password";
    var serverAndPort = "smtp.example.com:9999";
    var string = 'smtp://' + user + ':' + password + '@' + serverAndPort;
    process.env.MAIL_URL = string;
});

somethingelse.js

// put me at server/somethingelse.js

debugSendEmail = function() {
    Email.send({
        from: "",
        to: "",
        subject: "Subject",
        text: "Something happened"
    });
}