Eml-Parser

Parse .eml files or convert to pdf, html, jpeg or png format. Extract headers and attachments from .eml files.

installation

npm i eml-parser --save

Quick Start

const  EmlParser = require('eml-parser');
const  fs = require('fs');

let  emailFile = fs.createReadStream('./test.eml');

new  EmlParser(emailFile).convertEmailToStream('pdf')
.then(stream  => {
   stream.pipe(fs.createWriteStream(emailFile.path + '.pdf'));
})
.catch(err  => {
   console.log(err);
})

Reference

Class: EmlParser

new EmlParser(fs.createReadStream('test.eml'))

constructor takes a Read Stream as input

Methods

parseEml

new EmlParser(fs.createReadStream('test.eml'))
.parseEml()
.then(result  => {
	//properties in result object:
	//{
	//	"attachments": [],
	//	"headers": {},
	//	"headerLines": [],
	//	"html": "",
	//	"text": "",
	//	"textAsHtml": "",
	//	"subject": "",
	//	"references": "",
	//	"date": "",
	//	"to": {},
	//	"from": {},
	//	"cc": {},
	//	"messageId": "",
	//	"inReplyTo": ""
	}
	console.log(result);
})
.catch(err  => {
	console.log(err);
})

getEmailHeaders

new EmlParser(fs.createReadStream('test.eml'))
.getEmailHeaders()
.then(headers  => {
	//properties of headers object
	//{
	//	subject:  result.subject,
	//	from:  result.from.value,
	//	to:  result.to.value,
	//	cc:  result.cc.value,
	//	date:  result.date,
	//	inReplyTo:  result.inReplyTo,
	//	messageId:  result.messageId
	//}
	console.log(headers)
})
.catch(err  => {
	console.log(err);
})

getEmailBodyHtml

returns email content as a html string (without headers like subject, from, etc)

new EmlParser(fs.createReadStream('test.eml'))
.getEmailBodyHtml()
.then(htmlString  => {
	fs.writeFileSync('abc.html',htmlString)	;
})
.catch(err  => {
	console.log(err);
})

getEmailAsHtml

returns whole email as a html string (including headers like subject, from, etc)

new EmlParser(fs.createReadStream('test.eml'))
.getEmailAsHtml()
.then(htmlString  => {
	fs.writeFileSync('abc.html',htmlString)	;
})
.catch(err  => {
	console.log(err);
})

convertEmailToStream

• takes 1 optional argument type:'pdf'|'jpeg'|'png, defaults to: 'pdf' returns a stream which can be piped to a Write Stream to write to a file.

let  file = fs.createReadStream('test.eml')
new  EmlParser(file)
.convertEmailToStream('png')
.then(stream  => {
	stream.pipe(fs.createWriteStream(file.path + '.png'));
})
.catch(err  => {
	console.log(err);
})

convertEmailToBuffer

• takes 1 optional argument type:'pdf'|'jpeg'|'png, defaults to: 'pdf' returns a buffer object which can be used to write to a file using fs.write.

let  file = fs.createReadStream('test.eml')
new  EmlParser(file)
.convertEmailToBuffer('png')
.then(buffer  => {
	//use fs.write to write into file
})
.catch(err  => {
	console.log(err);
})

getEmailAttachments

• takes 1 optional argument type:'pdf'|'jpeg'|'png, defaults to: 'pdf' returns a buffer object which can be used to write to a file using fs.write.

let  file = fs.createReadStream('test.eml')
new  EmlParser(file)
.getEmailAttachments()
.then(attachments  => {
	attachments.forEach(attch  => {
		//attch.content is the buffer object
		console.log(attch.filename, attach.content);
		.then(res  => {
			console.log(res);
		})
		.catch(err  => {
		console.log(err);
		})
	});
})
.catch(err  => {
	console.log(err);
})