If your domain name is registered with us and uses our default nameservers (dns1-2.registrar-servers.com), refer to the following article:
Namecheap Private Email DNS records for domains registered with Namecheap
Domains hosted with Namecheap can be configured in a way described here:
Namecheap Private Email DNS records for domains hosted with Namecheap
If you are using services of a third party DNS provider, for example, another domain registrar or hosting company, find the records to set here:
Namecheap Private Email DNS records for domains with third party DNS.
DNS records setup guide for Namecheap Private Email service with CloudFlare can be found here:How to set up private Email DNS at CloudFlare.
In case your domain is registered with GoDaddy, the appropriate guide can be found in the next article:Namecheap Private Email DNS records setup for domains registered with GoDaddy.