If you're using secondary domains for sending, it's recommended to set up forwarding to your main website. This ensures that if a lead types your sending domain into their browser, they're taken to your primary website rather than seeing a blank or error page. Watch the detailed video walkthrough here.
Here are the steps to set up domain forwarding in Namecheap:
Log in to your Namecheap account.
Navigate to Domain List, find your domain, and click Manage.
In the Domains tab, scroll down to the Redirect section.
Click Add Redirect.
In Source URL, type your secondary domain, and in Destination URL, type your primary domain. Remember to include http:// or https:// with your primary domain.
Click on the check mark to save changes.
