You can create a free Gmail account with your custom domain name by following these steps: 1. Sign in to Gmail, go to Settings → Accounts and Import → Send Mail as → Add another email address. 2. Enter your name and custom email address (e.g., name@yourdomain.com). 3. Provide the SMTP server, username, and password from your email host. 4. Verify your custom email address, then set it as the default for sending emails. That's it; enjoy Gmail with your personalized domain name.