Connecting Email Purchased Outside of Wix
Connect email purchased outside of Wix to your Wix account by adding your email provider's DNS records in your Wix domain settings.
You may need to carry out these steps if you have stopped receiving emails to your custom address. This can happen if you recently connected an external domain to a Wix site and part of the DNS records for your business email didn't get transferred. Without the MX records you can't receive any email to the custom business email associated with your domain.