SellCloud installs and configures Postfix so your scripts can send email from your server. However, SellCloud does not manage mail servers for hosting your domain's email.
If you need to host your own email, you can use a separate server running iRedMail. iRedMail is a control panel dedicated to email hosting.
Use a separate server for iRedMail. Installing iRedMail on a server managed by SellCloud will break your websites and iRedMail.
Alert: For Control Panel Help & Tutorials, click here: Panel Tutorials