Node JS - nodemailer & imap-simple - Identify threads - node.js

Question

(I feel sorry for my poor english, but i'll do my best !) :)
I'm trying to setup a local mailbox for a personnal project, and i'm trying to use imap-simple and nodemailer to do that.
I want to be able to identify a thread, when i send an e-mail.
Here's what i exactly want to do :
In my application, i'll be able to send an e-mail to a specific person (let's admit foo#bar.com)
When the mail is sent, a callback function will store mail content and subject in DB (for example, in a CRM app, i will store the sent mail which will be related to a specific record in my database).
The complex part is just after that :
When the person replies to this e-mail, i want using IMAP to identify that this person is answering to my previous mail, and then store it in DB too, also linked to the same record i used on my first e-mail.
I actually have this in a sandbox folder (For IMAP) :
var imaps = require('imap-simple');
var nodemailer = require('nodemailer');
var config = {
imap: {
user: 'catchall#xxxxxxxx.fr',
password: 'xxxxxxxx',
host: 'imap.gmail.com',
port: 993,
tls: true,
authTimeout: 3000
}
};
imaps.connect(config).then(function (connection) {
return connection.openBox('INBOX').then(function () {
var searchCriteria = [
'UNSEEN'
];
var fetchOptions = {
bodies: ['HEADER', 'TEXT'],
markSeen: false,
};
console.log('Passing there');
return connection.search(searchCriteria, fetchOptions).then(function (results) {
var subjects = results.map(function (res) {
return res.parts.filter(function (part) {
return part.which === 'HEADER';
})[0].body.subject[0];
});
console.log('BASE');
console.log(results[0]);
console.log('FIRST');
console.log(results[0].parts[0]);
console.log('SECOND');
console.log(results[0].parts[1]);
});
});
});
And here is the SMTP part :
var transporter = nodemailer.createTransport({
service: 'gmail',
auth: {
user: 'catchall#xxxxxxxx.fr',
pass: 'xxxxxxxx'
}
});
const mailOptions = {
from: 'catchall#xxxxxxxx.fr', // sender address
to: 'xxxxxxxx#gmail.com', // list of receivers
subject: 'Subject of your email', // Subject line
html: '<p>Here is my test !</p>',// plain text body
headers: {
'collection': 'Pipelines',
'doc-ID': 'mydocid'
}
};
transporter.verify(function(error, success) {
if (error) {
console.log(error);
} else {
console.log("Server is ready to take our messages");
}
});
transporter.sendMail(mailOptions, function (err, info) {
if(err)
console.log(err)
else
console.log(info);
});
Here is a screen of what i want to be able to :
On IMAP, i'm getting exactly the information i want in console :
BASE
{ attributes:
{ date: 2019-12-05T16:53:07.000Z,
flags: [],
uid: 94,
modseq: '27800',
'x-gm-labels': [ '\\Important' ],
'x-gm-msgid': '1652099423356172171',
'x-gm-thrid': '1652099362185438260' },
x-gm-thrid allow me to identify a thread. Perhaps, i can't find this information in the nodemailer callback function :
Server is ready to take our messages
{ accepted: [ 'xxxxxxxxxxxxxxxxx#gmail.com' ],
rejected: [],
envelopeTime: 400,
messageTime: 819,
messageSize: 346,
response: '250 2.0.0 OK 1575566223 m3sm12955793wrs.53 - gsmtp',
envelope:
{ from: 'catchall#xxxxxxxxxx.fr',
to: [ 'xxxxxxxxxxxx#gmail.com' ] },
messageId: '<f93b3970-e17a-84b5-d0d1-ebb4fd6efe46#xxxxxxxxxx.fr>' }
Does anyone have an idea of how i could proceed ?
Thanks a lot btw !
Happy coding :)

Answer 1

For those who will read this post, here the answer, thanks to #arnt,
As #arnt said, there is for IMAP protocol, a reference attribute which is storing the previous message ID stored in results[0].parts[1] :
references: [ '<23df0af1-8ff1-0ffa-091e-a645a38e4a67#foobar.fr>' ],
'in-reply-to': [ '<23df0af1-8ff1-0ffa-091e-a645a38e4a67#foobar.fr>' ],
This one is also available when you send a message, in info :
envelope:
{ from: 'foobar#foobar.fr',
to: [ 'foobar#gmail.com' ] },
messageId: '<23df0af1-8ff1-0ffa-091e-a645a38e4a67#foobar.fr>' }
This way, we're able to correlate mail conversation.
Thanks a lot for help :)
Topic closed