You can create a domain alias for the 123ContactForm domain URL, if you are a Platinum user or higher. It’s commonly referred to as domain aliasing (or domain mapping). This way, the form link you share with users will contain your own domain name and no reference to 123ContactForm. In order to set up a domain alias, you need to create a subdomain on your own domain and to add a new CNAME record to your DNS. Also, you need to be on the Platinum or Diamond service plan.
Here are step-by-step instructions on how to create a domain alias and enable it:
Domain aliasing is now active. The form URL has been replaced with the alias in all of the publishing options. Copy/paste the form code normally. The domain alias will be used instead of our domain name.
Do domain aliasing and SSL encryption work together?