At this time RSVPify doesn't offer in-app domain name purchases. That said, if you would like to purchase a custom domain and have the RSVPify team configure your domain, you can do so via this link. The cost of having our team purchase this on your behalf and setting up the redirect / autoforwarding is a one-time fee of $99 USD. 

Before making your purchase, be sure to check that the desired URL is available. Once you've confirmed that it's available, you can proceed to step 2 and complete your purchase. Our team will receive a notification once the transaction has been complete with instructions of where to forward your custom domain. 

Tags: domain, URL, custom, forwarding, buy, www, registar, registration, .com