If you are hosting your website at Wix and would like to maintain the email service with us, you may refer below steps to configure them..
Below guideline is for DNS pointing method.
In your Wix panel
1. Go to the My Domains page.
2. Click on 'Connect a domain you already own'.
3. Select the site you want to connect your domain to and click Next.
Note: You may not see this step if you have already connected a domain.
4.Under 'What's your domain name?' enter the domain name that you want to connect to your site.
5. Change the connection method to pointing:
6. Click Connection Method: DNS and Select Pointing.
7. Click Next and follow the steps on your screen.
In your hosting control panel,
1. Login to control panel and click on 'Zone Editor'.
2. Click on the "Manage" button for the domain name you wish to point to WIX.
3. Click on "Edit" button to modify the DNS record of the domain name.
4. Fill in the A Record and CNAME record as following:
For yourdomain.com, create an A record that points to : Wix IP Address
For www.yourdomain.com, create a CNAME record that points to : www***.wixdns.net
4) Press the "Save Record" button to save both A Record and CNAME Record update.
5) Please allow at least 24 hours for the DNS propagation to complete.