Suppose you already setup Sendgrid account and request an API from sendgrid. Remember to store the API key somewhere because the key won't be revealed once you close the setup dialog

  • Select Setting from Cog icon in Gmail
  • Select Accounts and Import tab
  • In Send mail as:, click Add another email address
  • Enter your name and your email for example info@example.com. And uncheck Treat as an alias. Goto Next step
  • Enter following info

SMTP Server: smtp.sendgrid.net

Username: apikey

Password: your setup Sendgrid API key

Now click Add Account, check your email for the Verification code and finish setup