How to Send an SMTP Email | Twilio - SendGrid
docs.sendgrid.com › getting-started-smtpThis response is a Base64 encoded request for your password (your API Key). Enter your Base64 converted API key in the next line as the password and press Enter. The mail server will respond with 235 Authentication successful. Getting this far indicates that your connection to smtp.sendgrid.net over the chosen port is open and that your API key ...