Google Sites Domain and Gmail Integration

I’m looking for someone experienced with Google Sites, domain DNS settings, and email setup to help connect my existing custom domain to my Google Site and set up a professional email address through Gmail. I already own the domain and have access to my domain registrar and Google account—I just need help configuring everything correctly and walking me through the process.

What I need help with:

Connecting my custom domain to Google Sites

Updating DNS records (A records / CNAME, if needed)

Setting up a professional email address with my domain and connecting it to Gmail

Troubleshooting any setup or verification issues

Walking me through how to use and manage the email
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Experience with Google Sites and G Suite/Google Workspace email setup

Strong understanding of DNS/domain configuration

Able to complete this quickly and provide guidance so I understand the setup