By default, all e-mails (e.g. user invitations and alarm notifications) will still be sent from an IXON e-mail address (noreply@ixon.cloud). If you have a custom domain configured, you can change this. Please contact us requesting a "custom e-mail sender address" and include your desired sender e-mail address. Our Operations team will then contact you and inform you which additional DNS records you'll need to add to get this set up for your domain.