Do you plan to use TLS ?

[micktaiwan]

@GreenPioneer
Do you plan to implement an option to use TLS while sending an email ?

See
https://nodemailer.com/smtp/
secure – if true the connection will use TLS when connecting to server.

[zavr-1]

the client does have tls upgrade

node-sendmail/sendmail.js

Lines 199 to 217 in f8f5666

	sock = connect(
	opts,
	() => {
	sock.on('data', function (chunk) {
	data += chunk;
	parts = data.split(CRLF);
	const parts_length = parts.length - 1;
	for (let i = 0, len = parts_length; i < len; i++) {
	onLine(parts[i])
	}
	data = parts[parts.length - 1]
	});
	sock.removeAllListeners('close');
	sock.removeAllListeners('end');
	return;
	}
	);

[micktaiwan]

I do not see the relevance of the code you sent