sendmail.js

var spawn = require('child_process').spawn;

exports.send = function(email, config, callback) {
    var path = typeof config === "string" ? config : "sendmail";

    // Spawn sendmail. When it exits invoke the callback.
    child = spawn(path, [ '-t' ]);
    child.on('exit', function(code, signal) {
        if (code !== 0) {
            callback && callback(code, null);
        } else {
            callback && callback(null, true);
        }
    });

    // Prepare the data and feed it to sendmail. Omnomnom.
    email.prepareVariables();
    child.stdin.write(email.generateHeaders());
    child.stdin.write("\r\n\r\n");
    child.stdin.write(email.generateBody());
    child.stdin.end();
};