Before moving DNS to Cloudflare, prepare the current records so the website and email continue working.

1. Export or screenshot the current DNS records.
2. Confirm the website A/CNAME records.
3. Confirm all email records, especially MX, SPF, DKIM, and DMARC.
4. Add the domain to Cloudflare and compare imported records with the original list.
5. Change nameservers at the registrar only after the records look correct.
6. After nameserver change, test website, SSL, and email delivery.

If Cloudflare proxy is enabled, SSL mode must be compatible with the hosting server certificate. Ask support if you see redirect loops or SSL warnings.