Just like other providers you can use Brevo (used to be called sendinblue) to be your SMTP relay sender. To do this create an account on Brevo. You only need to do the free option as it allows 300 emails per day. Once you create the account you will need to go to the settings area on the top right and click on the option Senders & IP to setup your domain. Follow the steps they show you. {file:20230917221559-xyj37kyyslwzc4a.png} After go over to the Transactional section on the Brevo panel and setup the details you see on the panel over on NodeHost, you will need to after setup some more DNS records that Brevo will ask you to complete. {file:20230917221606-k666rzbq7l9un7c.png} Once this is done you should be good to go, just make sure you setup your domain MX record to send all mail to NodeHost for if someone replies to your email. We will display a message for you with the details on the email panel on NodeHost.