535 身份验证失败 - Twilio SendGrid SMTP 中继 NodeJS

Question

I have a verified mail with Twilio SendGrid. I'm following the SMTP Relay stat up guide here . I can't get it to send email using their SMTP Relay and NodeMailer. I need to know what I'm doing wrong?

In the example, they create an API Key and a password for you:

I'm using nodemailer here:

//smtp
smtpTransport = nodemailer.createTransport(smtpTransport({
host: "smtp.sendgrid.net",
//secure: true,
port: 587,
auth: {
user: sendgrid_api_key, // generated ethereal user
pass: sendgrid_pass, // generated ethereal password
},
}));

When I run this I get error in the console:

Error: Invalid login: 535 Authentication failed: Bad username / password at SMTPConnection._formatError

Answer 1

When using SMTP to send emails with SendGrid, the username you should use is the string apikey . Then the password should be your actual API key that has permission to send emails.