smtpapi-nodejs

This node module allows you to quickly and more easily generate SendGrid X-SMTPAPI headers.

var smtpapi   = require('smtpapi');
var header    = new smtpapi();
header.addTo('[email protected]');
header.setUniqueArgs({cow: 'chicken'});

var smtpapi_header_string = header.jsonString();

See this for more information on the available X-SMTPAPI custom handling instructions.

Installation

The following recommended installation requires npm. If you are unfamiliar with npm, see the npm docs. Npm comes installed with Node.js since node version 0.8.x therefore you likely already have it.

Add the following to your package.json file:

{
  ...
  "dependencies": {
    ...
    "smtpapi": "1.0.0"
  }
}

Install smtpapi-nodejs and its dependencies:

npm install

Usage

Initializing

var smtpapi   = require('smtpapi');
var header    = new smtpapi();

jsonString

This gives you back the stringified json formatted X-SMTPAPI header. Use this with your smtp client of choice.

var smtpapi   = require('smtpapi');
var header    = new smtpapi();
header.jsonString();

addTo

var header     = new smtpapi();
header.addTo('[email protected]');
header.addTo('[email protected]');

setTos

var header     = new smtpapi();
header.setTos(['[email protected]', '[email protected]');

addSubstitution

var header     = new smtpapi();
header.addSubstitution('keep', ['secret']);
header.addSubstitution('other', ['one', 'two']);

setSubstitutions

var header     = new smtpapi();
header.setSubstitution({'keep': ['secret']);

addUniqueArg

var header     = new smtpapi();
header.addUniqueArg('cat', 'dogs');

setUniqueArgs

var header     = new smtpapi();
header.setUniqueArgs({cow: 'chicken'});
header.setUniqueArgs({dad: 'proud'});

addCategory

var header     = new smtpapi();
header.addCategory('tactics');
header.addCategory('advanced');

setCategories

var header     = new smtpapi();
header.setCategories(['tactics', 'advanced']);

addSection

var header     = new smtpapi();
header.addSection('-charge-', 'This ship is useless.');

setSections

var header     = new smtpapi();
header.setSections({'-charge-': 'This ship is useless.', '-other': 'Another section here'});

addFilter

You can add filter settings one at a time.

var header     = new smtpapi();
header.addFilter('footer', 'enable', 1);
header.addFilter('footer', 'text/html', '<strong>boo</strong>');

setFilters

You can set a filter using an object literal.

var header     = new smtpapi();
header.setFilters({
  'footer': {
    'setting': {
      'enable': 1,
      'text/plain': 'You can haz footers!'
    }
  }
});

SendGrid SMTP Example

The following example builds the X-SMTPAPI headers and adds them to nodemailer. Nodemailer then sends the email through SendGrid. You can use this same code in your application or optionally you can use sendgrid-nodejs.

var nodemailer = require('nodemailer');
var smtpapi    = require('smtpapi');

// Build the smtpapi header
var header = new smtpapi();
header.addTo('[email protected]');
header.setUniqueArgs({cow: 'chicken'});

// Add the smtpapi header to the general headers
var headers    = { 'x-smtpapi': header.jsonString() };

// Use nodemailer to send the email
var settings  = {
  host: "smtp.sendgrid.net",
  port: parseInt(587, 10),
  requiresAuth: true,
  auth: {
    user: "sendgrid_username",
    pass: "sendgrid_password"
  }
};
var smtpTransport = nodemailer.createTransport("SMTP", settings);

var mailOptions = {
  from:     "Fred Foo <[email protected]>",
  to:       "[email protected]",
  subject:  "Hello",
  text:     "Hello world",
  html:     "<b>Hello world</b>",
  headers:  headers
}

smtpTransport.sendMail(mailOptions, function(error, response) {
  smtpTransport.close();

  if (error) {
    console.log(error);
  } else {
    console.log("Message sent: " + response.message);
  }
});

Contributing

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Added some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request

Running Tests

npm test
```