Step 1: Click on your profile name and go to “company profile”
Step 2: Click on “Add & Verify Tracking Domain” and just simply add your subdomain on the field shown
Step 3: Copy the Cname record you need to add to your DNS records.
Step 4: Go to your hosting provider and paste that Cname.
Example: Our host is NameCheap.
Step 5: Once you’re done adding to your host provider, go back to Mailvio and just click continue.
Step 6: Same steps applied to the CDN Domains.
Step 7: Copy the Cname record you need to add to your DNS records and paste it on your host provider and click continue.
Step 8: Click on the “authenticate” and just wait for the DNS record to authenticate.