Build and stream nodemailer attachments
npm install nodemailer-build-attachment       
Build and stream attachment's content. Based on Andris Reinman's work in buildmail.
``
npm install nodemailer-build-attachment
`javascript
'use strict';
const BuildAttachment = require('nodemailer-build-attachment');
const fs = require('fs');
const stream = fs.createReadStream('path/to/file.txt');
const options = {
contentTransferEncoding: 'base64'
};
new BuildAttachment(options).setContent(stream).build((err, attachment) => {
console.log(attachment.content.toString()); // base64 encoded string
});
``
The MIT License (MIT)
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of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
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The above copyright notice and this permission notice shall be included in all
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SOFTWARE.