Nodemailer Invalid Login 535 when setting environment variables with ZEIT Now - node.js

Question

When I use this configuration for Nodemailer:
const transporter = nodemailer.createTransport({
service: process.env.EMAIL_SERVICE,
auth: {
user: process.env.EMAIL_USER,
pass: process.env.EMAIL_PASSWORD
}
});
Variables:
EMAIL_SERVICE: 'Hotmail',
EMAIL_USER: 'MyEmail#outlook.com',
EMAIL_PASSWORD: 'MyPassword'
And I send the email like this:
transporter.sendMail({
to: email,
subject: 'Confirmar cambio de contraseña',
html: `Para cambiar la contraseña entre a ${url} <br> Este token solo dura 24 horas.`
});
In development it works perfectly but when I deploy this in Now, It throws me this error:
How can I resolve it?
Here a little example about this:
https://github.com/MontoyaAndres/NowProblemNodemailer
And here in now:
https://nowemail-owcypiqzsr.now.sh
Thank you :)

Answer 1

You probably need to add a secret and then add the environment variables to your now.json.
Run these commands once to add secrets in your ZEIT Now account (use now switch if you have multiple accounts).
now secret add email-service 'Hotmail'
now secret add email-user 'MyEmail#outlook.com'
now secret add email-password 'MyPassword'
Then add the env key to your now.json file like so:
{
"version": 2,
"builds": [/* your builds go here */],
"env": {
"EMAIL_SERVICE": "#email-service",
"EMAIL_USER": "#email-user",
"EMAIL_PASSWORD": "#email-password"
}
}