External HTML file with CSS as email content in nodemailer

Question

Does anyone know how to tell Node.js the nodemailer module to use an external HTML file (with links to stylesheets) as email content?

I can print HTML tags as email content, but I prefer to download full HTML files. I am using nodemailer 1.3.0.

Unfortunately, I cannot find any example covering this problem for a real version of nodemailer.

Ideas?

Answer 1

Use http://styliner.slaks.net

node.js, css, nodemailer HTML.

/ , . (.. " /local.html" "\myhostname\afolder\coverage\local.html"

script, , .

/*
 * Use this script to send Istanbul code coverage results via email.
 * 
 * NPM REQUIREMENTS:
 *  The following packages need to be installed:
 *   - npm install styliner
 *   - npm install nodemailer
 *   - npm install nodemailer-smtp-transport
 * 
 * Usage: node sendNodeJSCoverageEmail.js <origfile> <basedir> <receipient>
 * 
 *  <origfile>  : This is the original Istanbul index.html from the code coverage report
 *  <basedir>   : TeamCity directory where the index.html resides. Must contain "DevTC" folder (see below)
 *  <recipient> : Email address to send the results to. 
 * 
 * What it does:
 *  Istanbul creates an html report for code coverage. It is a complete web page, and has an index.html,
 *  some CSS style sheets, and relative links to other coverage.
 *  
 *  This script takes the index.html, reads the referenced .css files, and inlines the css, so that external
 *  files are no longer needed. (this is because you can't send multiple files for an html email).
 *  Also, the relative links are prepended with the UNC path to the files: this means that the recipients 
 *  can click on the links in the html email and they will work. 
 *  
 *  NOTE: it assumes the TeamCity folder where the coverage reports reside is shared, and also contains the 
 *        folder DevTC (it looks for this folder to do the substitution). All build machines have this 
 *        folder structure. 
 *        
 */

var nodemailer = require('nodemailer');
var os = require("os");
var hostname = os.hostname();

var originalFile = process.argv[2].toString();
var baseDir = process.argv[3].toString();
var recipient = process.argv[4].toString();

var Styliner = require('styliner');


var uncDrive = '\\\\' + hostname + '\\DevTC';
var uncPath = baseDir.replace(/.*DevTC/gi, uncDrive);


// prependUNCPath is a function called by Styliner for every
// link that is found in the HTML.
function prependUNCPath(path, type) {
    return uncPath + path;
}

// See http://styliner.slaks.net/#about for Styliner options
var options = { url : prependUNCPath, noCSS : true };
var styliner = new Styliner(baseDir, options);

function sendEmail(source) {

    var nodemailer = require('nodemailer');
    var smtpTransport = require('nodemailer-smtp-transport');

    // create reusable transporter object using SMTP transport
    var transport = nodemailer.createTransport(smtpTransport({
        host: 'your-smtp-server.local',  // FIXME: Change this!
        port: 25,
    }));


    // setup e-mail data with unicode symbols
    var mailOptions = {
        from: 'TeamCity <[e-mail]>', // sender address
        to: recipient, // list of receivers
        subject: 'Code Coverage results', // Subject line
        // text: 'Hello world ?', // plaintext body, not used
        html: source // html body
    };

    // send mail with defined transport object
    transport.sendMail(mailOptions, function (error, info) {
        if (error) {
            console.log(error);
        } else {
            console.log('Message sent: ' + info.response);
        }
    });


}


var fs = require('fs')

// Do the reading of the original index.html, and kick everything off.
fs.readFile(originalFile, 'utf8', function (err, data) {
    if (err) {
        return console.log(err);
    }

    styliner.processHTML(data)
    .then(function (source)
         {

        sendEmail(source);

        fs.writeFile("newindex.html", source, function (err) {
            if (err) {
                return console.log(err);
            }

            console.log("The file was saved!");
        });

      }

    );

});

Answer 2

fs module readFile HTML , .

readFile: http://docs.nodejitsu.com/articles/file-system/how-to-read-files-in-nodejs

Answer 3

You should use the built-in css, and not a separate file, since the HTML rendering of the head elements and such are determined by the provider not by the nodemiler.

I would recommend the mailChim css inliner tool , it is quite convenient, just install

html: '<div style="font - family: verdana; max-width:500px; margin-left">' + 'more string and string'